68738636 has 12 divisors (see below), whose sum is σ = 120373512. Its totient is φ = 34346208.

The previous prime is 68738627. The next prime is 68738641. The reversal of 68738636 is 63683786.

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, 2111 + ... + 11913.

It is an arithmetic number, because the mean of its divisors is an integer number (10031126).

Almost surely, 2^68738636 is an apocalyptic number.

It is an amenable number.

68738636 is a deficient number, since it is larger than the sum of its proper divisors (51634876).

68738636 is a wasteful number, since it uses less digits than its factorization.

68738636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11560 (or 11558 counting only the distinct ones).

The product of its digits is 870912, while the sum is 47.

The square root of 68738636 is about 8290.8766725841. The cubic root of 68738636 is about 409.6380625004.

The spelling of 68738636 in words is "sixty-eight million, seven hundred thirty-eight thousand, six hundred thirty-six".