68508164 has 48 divisors (see below), whose sum is σ = 132512688. Its totient is φ = 30855168.

The previous prime is 68508163. The next prime is 68508221. The reversal of 68508164 is 46180586.

It can be written as a sum of positive squares in 8 ways, for example, as 11957764 + 56550400 = 3458^2 + 7520^2 .

It is not an unprimeable number, because it can be changed into a prime (68508161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183482 + ... + 183854.

It is an arithmetic number, because the mean of its divisors is an integer number (2760681).

Almost surely, 2^68508164 is an apocalyptic number.

It is an amenable number.

68508164 is a deficient number, since it is larger than the sum of its proper divisors (64004524).

68508164 is a wasteful number, since it uses less digits than its factorization.

68508164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504 (or 502 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 68508164 is about 8276.9658692059. The cubic root of 68508164 is about 409.1797282404.

The spelling of 68508164 in words is "sixty-eight million, five hundred eight thousand, one hundred sixty-four".