63920688 has 40 divisors (see below), whose sum is σ = 177832368. Its totient is φ = 19667712.

The previous prime is 63920687. The next prime is 63920699. The reversal of 63920688 is 88602936.

It is not an unprimeable number, because it can be changed into a prime (63920687) 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, 50595 + ... + 51842.

Almost surely, 2^63920688 is an apocalyptic number.

It is an amenable number.

63920688 is an abundant number, since it is smaller than the sum of its proper divisors (113911680).

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

63920688 is a wasteful number, since it uses less digits than its factorization.

63920688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102461 (or 102455 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 63920688 is about 7995.0414633071. The cubic root of 63920688 is about 399.8346983645.

The spelling of 63920688 in words is "sixty-three million, nine hundred twenty thousand, six hundred eighty-eight".