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68142606 = 2372323067
BaseRepresentation
bin1000000111111…
…00011000001110
311202020000002020
410003330120032
5114421030411
610432311010
71455126330
oct403743016
9152200066
1068142606
1135512604
121a9a2466
131116b28c
14909b450
155eb0606
hex40fc60e

68142606 has 48 divisors (see below), whose sum is σ = 162873984. Its totient is φ = 18616752.

The previous prime is 68142601. The next prime is 68142611. The reversal of 68142606 is 60624186.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68142601) and next prime (68142611).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68142601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20685 + ... + 23751.

It is an arithmetic number, because the mean of its divisors is an integer number (3393208).

Almost surely, 268142606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68142606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81436992).

68142606 is an abundant number, since it is smaller than the sum of its proper divisors (94731378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68142606 is a wasteful number, since it uses less digits than its factorization.

68142606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3125 (or 3102 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 68142606 is about 8254.8534814375. The cubic root of 68142606 is about 408.4506386655.

The spelling of 68142606 in words is "sixty-eight million, one hundred forty-two thousand, six hundred six".

Divisors: 1 2 3 6 7 14 21 23 42 46 69 138 161 322 483 529 966 1058 1587 3067 3174 3703 6134 7406 9201 11109 18402 21469 22218 42938 64407 70541 128814 141082 211623 423246 493787 987574 1481361 1622443 2962722 3244886 4867329 9734658 11357101 22714202 34071303 68142606