63990960 has 80 divisors (see below), whose sum is σ = 216414720. Its totient is φ = 15512320.

The previous prime is 63990929. The next prime is 63990967. The reversal of 63990960 is 6909936.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63990967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9480 + ... + 14759.

It is an arithmetic number, because the mean of its divisors is an integer number (2705184).

Almost surely, 2^63990960 is an apocalyptic number.

63990960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63990960 is an abundant number, since it is smaller than the sum of its proper divisors (152423760).

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

63990960 is a wasteful number, since it uses less digits than its factorization.

63990960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24266 (or 24260 counting only the distinct ones).

The product of its (nonzero) digits is 78732, while the sum is 42.

The square root of 63990960 is about 7999.4349800470. The cubic root of 63990960 is about 399.9811657799.

The spelling of 63990960 in words is "sixty-three million, nine hundred ninety thousand, nine hundred sixty".