80920863 has 10 divisors (see below), whose sum is σ = 120881904. Its totient is φ = 53947188.

The previous prime is 80920843. The next prime is 80920891. The reversal of 80920863 is 36802908.

It is not a de Polignac number, because 80920863 - 2⁸ = 80920607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80920843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 499431 + ... + 499592.

Almost surely, 2^80920863 is an apocalyptic number.

80920863 is a deficient number, since it is larger than the sum of its proper divisors (39961041).

80920863 is an equidigital number, since it uses as much as digits as its factorization.

80920863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999035 (or 999026 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 80920863 is about 8995.6024256300. The cubic root of 80920863 is about 432.5339173953.

The spelling of 80920863 in words is "eighty million, nine hundred twenty thousand, eight hundred sixty-three".