80591867 has 4 divisors (see below), whose sum is σ = 80707536. Its totient is φ = 80476200.

The previous prime is 80591851. The next prime is 80591873. The reversal of 80591867 is 76819508.

It is a happy number.

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 80591867 - 2⁴ = 80591851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80591807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56783 + ... + 58184.

It is an arithmetic number, because the mean of its divisors is an integer number (20176884).

Almost surely, 2^80591867 is an apocalyptic number.

80591867 is a deficient number, since it is larger than the sum of its proper divisors (115669).

80591867 is a wasteful number, since it uses less digits than its factorization.

80591867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115668.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 80591867 is about 8977.2973104381. The cubic root of 80591867 is about 431.9469438585.

The spelling of 80591867 in words is "eighty million, five hundred ninety-one thousand, eight hundred sixty-seven".