80915679 has 60 divisors (see below), whose sum is σ = 137109456. Its totient is φ = 47443968.

The previous prime is 80915663. The next prime is 80915701. The reversal of 80915679 is 97651908.

80915679 is a `hidden beast` number, since 80 + 9 + 1 + 567 + 9 = 666.

It is not a de Polignac number, because 80915679 - 2⁴ = 80915663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80915629) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 314719 + ... + 314975.

Almost surely, 2^80915679 is an apocalyptic number.

80915679 is a deficient number, since it is larger than the sum of its proper divisors (56193777).

80915679 is a wasteful number, since it uses less digits than its factorization.

80915679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 296 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 80915679 is about 8995.3142802239. The cubic root of 80915679 is about 432.5246807839.

The spelling of 80915679 in words is "eighty million, nine hundred fifteen thousand, six hundred seventy-nine".