80757999 has 64 divisors (see below), whose sum is σ = 147558400. Its totient is φ = 42620256.

The previous prime is 80757967. The next prime is 80758009. The reversal of 80757999 is 99975708.

It is not a de Polignac number, because 80757999 - 2⁵ = 80757967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80757499) 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 63 ways as a sum of consecutive naturals, for example, 154152 + ... + 154674.

It is an arithmetic number, because the mean of its divisors is an integer number (2305600).

Almost surely, 2^80757999 is an apocalyptic number.

80757999 is a deficient number, since it is larger than the sum of its proper divisors (66800401).

80757999 is a wasteful number, since it uses less digits than its factorization.

80757999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601 (or 595 counting only the distinct ones).

The product of its (nonzero) digits is 1428840, while the sum is 54.

The square root of 80757999 is about 8986.5454430498. The cubic root of 80757999 is about 432.2435451573.

The spelling of 80757999 in words is "eighty million, seven hundred fifty-seven thousand, nine hundred ninety-nine".