80686775 has 12 divisors (see below), whose sum is σ = 107748312. Its totient is φ = 59583840.

The previous prime is 80686759. The next prime is 80686789. The reversal of 80686775 is 57768608.

It is not a de Polignac number, because 80686775 - 2⁴ = 80686759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123809 + ... + 124458.

It is an arithmetic number, because the mean of its divisors is an integer number (8979026).

Almost surely, 2^80686775 is an apocalyptic number.

80686775 is a deficient number, since it is larger than the sum of its proper divisors (27061537).

80686775 is a wasteful number, since it uses less digits than its factorization.

80686775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248290 (or 248285 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 47.

The square root of 80686775 is about 8982.5817558205. The cubic root of 80686775 is about 432.1164363069.

The spelling of 80686775 in words is "eighty million, six hundred eighty-six thousand, seven hundred seventy-five".