63690568 has 32 divisors (see below), whose sum is σ = 129396960. Its totient is φ = 29272320.

The previous prime is 63690563. The next prime is 63690587. The reversal of 63690568 is 86509636.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (63690563) 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, 403 + ... + 11293.

It is an arithmetic number, because the mean of its divisors is an integer number (4043655).

Almost surely, 2^63690568 is an apocalyptic number.

63690568 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

63690568 is an abundant number, since it is smaller than the sum of its proper divisors (65706392).

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

63690568 is a wasteful number, since it uses less digits than its factorization.

63690568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10957 (or 10953 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 63690568 is about 7980.6370673023. The cubic root of 63690568 is about 399.3543082663.

It can be divided in two parts, 636 and 90568, that added together give a square (91204 = 302²).

The spelling of 63690568 in words is "sixty-three million, six hundred ninety thousand, five hundred sixty-eight".