68136936 has 32 divisors (see below), whose sum is σ = 194677440. Its totient is φ = 19467648.

The previous prime is 68136919. The next prime is 68136949. The reversal of 68136936 is 63963186.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202621 + ... + 202956.

It is an arithmetic number, because the mean of its divisors is an integer number (6083670).

Almost surely, 2^68136936 is an apocalyptic number.

It is an amenable number.

68136936 is an abundant number, since it is smaller than the sum of its proper divisors (126540504).

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

68136936 is a wasteful number, since it uses less digits than its factorization.

68136936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405593 (or 405589 counting only the distinct ones).

The product of its digits is 139968, while the sum is 42.

The square root of 68136936 is about 8254.5100399721. The cubic root of 68136936 is about 408.4393095842.

The spelling of 68136936 in words is "sixty-eight million, one hundred thirty-six thousand, nine hundred thirty-six".