80812917 has 16 divisors (see below), whose sum is σ = 126766080. Its totient is φ = 50705856.

The previous prime is 80812891. The next prime is 80812933. The reversal of 80812917 is 71921808.

It is not a de Polignac number, because 80812917 - 2⁸ = 80812661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80812987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87573 + ... + 88490.

It is an arithmetic number, because the mean of its divisors is an integer number (7922880).

Almost surely, 2^80812917 is an apocalyptic number.

It is an amenable number.

80812917 is a deficient number, since it is larger than the sum of its proper divisors (45953163).

80812917 is a wasteful number, since it uses less digits than its factorization.

80812917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176089 (or 176083 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 80812917 is about 8989.6004916793. The cubic root of 80812917 is about 432.3415027280.

The spelling of 80812917 in words is "eighty million, eight hundred twelve thousand, nine hundred seventeen".