68561936 has 20 divisors (see below), whose sum is σ = 133068864. Its totient is φ = 34221600.

The previous prime is 68561929. The next prime is 68561947. The reversal of 68561936 is 63916586.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6701 + ... + 13491.

Almost surely, 2^68561936 is an apocalyptic number.

It is an amenable number.

68561936 is a deficient number, since it is larger than the sum of its proper divisors (64506928).

68561936 is a wasteful number, since it uses less digits than its factorization.

68561936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7430 (or 7424 counting only the distinct ones).

The product of its digits is 233280, while the sum is 44.

The square root of 68561936 is about 8280.2135238169. The cubic root of 68561936 is about 409.2867551844.

The spelling of 68561936 in words is "sixty-eight million, five hundred sixty-one thousand, nine hundred thirty-six".