63690872 has 16 divisors (see below), whose sum is σ = 136480560. Its totient is φ = 27296064.

The previous prime is 63690853. The next prime is 63690877. The reversal of 63690872 is 27809636.

It is a super-2 number, since 2×63690872² = 8113054352240768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63690877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 568613 + ... + 568724.

It is an arithmetic number, because the mean of its divisors is an integer number (8530035).

Almost surely, 2^63690872 is an apocalyptic number.

It is an amenable number.

63690872 is an abundant number, since it is smaller than the sum of its proper divisors (72789688).

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

63690872 is a wasteful number, since it uses less digits than its factorization.

63690872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137350 (or 1137346 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 63690872 is about 7980.6561133781. The cubic root of 63690872 is about 399.3549436483.

Adding to 63690872 its product of nonzero digits (108864), we get a palindrome (63799736).

The spelling of 63690872 in words is "sixty-three million, six hundred ninety thousand, eight hundred seventy-two".