80831767 has 4 divisors (see below), whose sum is σ = 81043200. Its totient is φ = 80620336.

The previous prime is 80831761. The next prime is 80831783. The reversal of 80831767 is 76713808.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80831767 - 2¹⁵ = 80798999 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 (80831761) 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 3 ways as a sum of consecutive naturals, for example, 105142 + ... + 105907.

It is an arithmetic number, because the mean of its divisors is an integer number (20260800).

Almost surely, 2^80831767 is an apocalyptic number.

80831767 is a deficient number, since it is larger than the sum of its proper divisors (211433).

80831767 is a wasteful number, since it uses less digits than its factorization.

80831767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211432.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 80831767 is about 8990.6488642367. The cubic root of 80831767 is about 432.3751153569.

The spelling of 80831767 in words is "eighty million, eight hundred thirty-one thousand, seven hundred sixty-seven".