68634902 has 32 divisors (see below), whose sum is σ = 121746240. Its totient is φ = 28408320.

The previous prime is 68634887. The next prime is 68634911. The reversal of 68634902 is 20943686.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62018 + ... + 63114.

It is an arithmetic number, because the mean of its divisors is an integer number (3804570).

Almost surely, 2^68634902 is an apocalyptic number.

68634902 is a deficient number, since it is larger than the sum of its proper divisors (53111338).

68634902 is a wasteful number, since it uses less digits than its factorization.

68634902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 68634902 is about 8284.6183979710. The cubic root of 68634902 is about 409.4318961147.

The spelling of 68634902 in words is "sixty-eight million, six hundred thirty-four thousand, nine hundred two".