63974680 has 64 divisors (see below), whose sum is σ = 179470080. Its totient is φ = 19939200.

The previous prime is 63974671. The next prime is 63974681. The reversal of 63974680 is 8647936.

It is a happy number.

It is a super-2 number, since 2×63974680² = 8185519362204800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63974681) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 7306 + ... + 13465.

It is an arithmetic number, because the mean of its divisors is an integer number (2804220).

Almost surely, 2^63974680 is an apocalyptic number.

It is an amenable number.

63974680 is an abundant number, since it is smaller than the sum of its proper divisors (115495400).

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

63974680 is a wasteful number, since it uses less digits than its factorization.

63974680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20800 (or 20796 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 63974680 is about 7998.4173434499. The cubic root of 63974680 is about 399.9472430421.

The spelling of 63974680 in words is "sixty-three million, nine hundred seventy-four thousand, six hundred eighty".