80809775 has 12 divisors (see below), whose sum is σ = 101332800. Its totient is φ = 63919680.

The previous prime is 80809769. The next prime is 80809843. The reversal of 80809775 is 57790808.

It is not a de Polignac number, because 80809775 - 2¹² = 80805679 is a prime.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15935 + ... + 20384.

It is an arithmetic number, because the mean of its divisors is an integer number (8444400).

Almost surely, 2^80809775 is an apocalyptic number.

80809775 is a deficient number, since it is larger than the sum of its proper divisors (20523025).

80809775 is a wasteful number, since it uses less digits than its factorization.

80809775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36418 (or 36413 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 44.

The square root of 80809775 is about 8989.4257324926. The cubic root of 80809775 is about 432.3358995206.

The spelling of 80809775 in words is "eighty million, eight hundred nine thousand, seven hundred seventy-five".