63955668 has 24 divisors (see below), whose sum is σ = 170548672. Its totient is φ = 18273024.

The previous prime is 63955657. The next prime is 63955669. The reversal of 63955668 is 86655936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63955669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380605 + ... + 380772.

Almost surely, 2^63955668 is an apocalyptic number.

It is an amenable number.

63955668 is an abundant number, since it is smaller than the sum of its proper divisors (106593004).

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

63955668 is a wasteful number, since it uses less digits than its factorization.

63955668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761391 (or 761389 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 48.

The square root of 63955668 is about 7997.2287700178. The cubic root of 63955668 is about 399.9076203333.

The spelling of 63955668 in words is "sixty-three million, nine hundred fifty-five thousand, six hundred sixty-eight".