80864523 has 12 divisors (see below), whose sum is σ = 120572608. Its totient is φ = 52170480.

The previous prime is 80864507. The next prime is 80864549. The reversal of 80864523 is 32546808.

80864523 is a `hidden beast` number, since 8 + 0 + 8 + 645 + 2 + 3 = 666.

It is not a de Polignac number, because 80864523 - 2⁴ = 80864507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80864023) 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 11 ways as a sum of consecutive naturals, for example, 144640 + ... + 145197.

Almost surely, 2^80864523 is an apocalyptic number.

80864523 is a deficient number, since it is larger than the sum of its proper divisors (39708085).

80864523 is a wasteful number, since it uses less digits than its factorization.

80864523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289874 (or 289871 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 80864523 is about 8992.4703502430. The cubic root of 80864523 is about 432.4335122270.

The spelling of 80864523 in words is "eighty million, eight hundred sixty-four thousand, five hundred twenty-three".