63999204 has 24 divisors (see below), whose sum is σ = 151562208. Its totient is φ = 21014400.

The previous prime is 63999191. The next prime is 63999211. The reversal of 63999204 is 40299936.

It is a super-2 number, since 2×63999204² = 8191796225267232, which contains 22 as substring.

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, 38997 + ... + 40604.

It is an arithmetic number, because the mean of its divisors is an integer number (6315092).

Almost surely, 2^63999204 is an apocalyptic number.

It is an amenable number.

63999204 is an abundant number, since it is smaller than the sum of its proper divisors (87563004).

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

63999204 is a wasteful number, since it uses less digits than its factorization.

63999204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79675 (or 79673 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 63999204 is about 7999.9502498453. The cubic root of 63999204 is about 399.9983416598.

The spelling of 63999204 in words is "sixty-three million, nine hundred ninety-nine thousand, two hundred four".