63657988 has 12 divisors (see below), whose sum is σ = 112279552. Its totient is φ = 31578120.

The previous prime is 63657967. The next prime is 63658003. The reversal of 63657988 is 88975636.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62148 + ... + 63163.

Almost surely, 2^63657988 is an apocalyptic number.

It is an amenable number.

63657988 is a deficient number, since it is larger than the sum of its proper divisors (48621564).

63657988 is a wasteful number, since it uses less digits than its factorization.

63657988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125442 (or 125440 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 52.

The square root of 63657988 is about 7978.5956157710. The cubic root of 63657988 is about 399.2862019887.

The spelling of 63657988 in words is "sixty-three million, six hundred fifty-seven thousand, nine hundred eighty-eight".