68186904 has 32 divisors (see below), whose sum is σ = 177880320. Its totient is φ = 21740576.

The previous prime is 68186903. The next prime is 68186929. The reversal of 68186904 is 40968186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68186903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61212 + ... + 62315.

It is an arithmetic number, because the mean of its divisors is an integer number (5558760).

Almost surely, 2^68186904 is an apocalyptic number.

It is an amenable number.

68186904 is an abundant number, since it is smaller than the sum of its proper divisors (109693416).

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

68186904 is a wasteful number, since it uses less digits than its factorization.

68186904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123559 (or 123555 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 68186904 is about 8257.5361942894. The cubic root of 68186904 is about 408.5391277334.

The spelling of 68186904 in words is "sixty-eight million, one hundred eighty-six thousand, nine hundred four".