80663931 has 20 divisors (see below), whose sum is σ = 121284592. Its totient is φ = 53425008.

The previous prime is 80663927. The next prime is 80663951. The reversal of 80663931 is 13936608.

It is a happy number.

It is not a de Polignac number, because 80663931 - 2² = 80663927 is a prime.

It is a super-2 number, since 2×80663931² = 13013339528745522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80663951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9546 + ... + 15888.

Almost surely, 2^80663931 is an apocalyptic number.

80663931 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

80663931 is a deficient number, since it is larger than the sum of its proper divisors (40620661).

80663931 is a wasteful number, since it uses less digits than its factorization.

80663931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6512 (or 6503 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 80663931 is about 8981.3100937447. The cubic root of 80663931 is about 432.0756522602.

The spelling of 80663931 in words is "eighty million, six hundred sixty-three thousand, nine hundred thirty-one".