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68618254 = 250368209
BaseRepresentation
bin1000001011100…
…00100000001110
311210010011112211
410011300200032
5120031241004
610450421034
71462150135
oct405604016
9153104484
1068618254
1135807a01
121ab9177a
13112a6923
14918291c
156056504
hex417080e

68618254 has 8 divisors (see below), whose sum is σ = 103133520. Its totient is φ = 34240416.

The previous prime is 68618219. The next prime is 68618257. The reversal of 68618254 is 45281686.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68618257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33099 + ... + 35110.

It is an arithmetic number, because the mean of its divisors is an integer number (12891690).

Almost surely, 268618254 is an apocalyptic number.

68618254 is a deficient number, since it is larger than the sum of its proper divisors (34515266).

68618254 is a wasteful number, since it uses less digits than its factorization.

68618254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68714.

The product of its digits is 92160, while the sum is 40.

The square root of 68618254 is about 8283.6135834550. The cubic root of 68618254 is about 409.3987896670.

The spelling of 68618254 in words is "sixty-eight million, six hundred eighteen thousand, two hundred fifty-four".

Divisors: 1 2 503 1006 68209 136418 34309127 68618254