38631664 has 20 divisors (see below), whose sum is σ = 75968104. Its totient is φ = 19027008.

The previous prime is 38631643. The next prime is 38631707. The reversal of 38631664 is 46613683.

38631664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16947 + ... + 19090.

Almost surely, 2^38631664 is an apocalyptic number.

It is an amenable number.

38631664 is a deficient number, since it is larger than the sum of its proper divisors (37336440).

38631664 is a wasteful number, since it uses less digits than its factorization.

38631664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36112 (or 36106 counting only the distinct ones).

The product of its digits is 62208, while the sum is 37.

The square root of 38631664 is about 6215.4375549916. The cubic root of 38631664 is about 338.0501541998.

The spelling of 38631664 in words is "thirty-eight million, six hundred thirty-one thousand, six hundred sixty-four".