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68335501 = 1331169567
BaseRepresentation
bin1000001001010…
…11011110001101
311202120210200111
410010223132031
5114443214001
610440400021
71456561603
oct404533615
9152523614
1068335501
1135634523
121aa76011
1311208010
14910b873
155eec851
hex412b78d

68335501 has 8 divisors (see below), whose sum is σ = 75966464. Its totient is φ = 61043760.

The previous prime is 68335499. The next prime is 68335523. The reversal of 68335501 is 10553386.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68335501 - 21 = 68335499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68335601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84381 + ... + 85186.

It is an arithmetic number, because the mean of its divisors is an integer number (9495808).

Almost surely, 268335501 is an apocalyptic number.

It is an amenable number.

68335501 is a deficient number, since it is larger than the sum of its proper divisors (7630963).

68335501 is a wasteful number, since it uses less digits than its factorization.

68335501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169611.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 68335501 is about 8266.5289571863. The cubic root of 68335501 is about 408.8356834219.

Adding to 68335501 its reverse (10553386), we get a palindrome (78888887).

The spelling of 68335501 in words is "sixty-eight million, three hundred thirty-five thousand, five hundred one".

Divisors: 1 13 31 403 169567 2204371 5256577 68335501