63880931 has 4 divisors (see below), whose sum is σ = 63897000. Its totient is φ = 63864864.

The previous prime is 63880903. The next prime is 63880937. The reversal of 63880931 is 13908836.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 63880931 - 2¹⁴ = 63864547 is a prime.

It is a super-2 number, since 2×63880931² = 8161546690853522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63880937) 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, 2795 + ... + 11643.

It is an arithmetic number, because the mean of its divisors is an integer number (15974250).

Almost surely, 2^63880931 is an apocalyptic number.

63880931 is a deficient number, since it is larger than the sum of its proper divisors (16069).

63880931 is an equidigital number, since it uses as much as digits as its factorization.

63880931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16068.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 63880931 is about 7992.5547229906. The cubic root of 63880931 is about 399.7517855892.

The spelling of 63880931 in words is "sixty-three million, eight hundred eighty thousand, nine hundred thirty-one".