80744871 has 4 divisors (see below), whose sum is σ = 107659832. Its totient is φ = 53829912.

The previous prime is 80744861. The next prime is 80744899. The reversal of 80744871 is 17844708.

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

It is a de Polignac number, because none of the positive numbers 2^k-80744871 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 (80744861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13457476 + ... + 13457481.

It is an arithmetic number, because the mean of its divisors is an integer number (26914958).

Almost surely, 2^80744871 is an apocalyptic number.

80744871 is a deficient number, since it is larger than the sum of its proper divisors (26914961).

80744871 is a wasteful number, since it uses less digits than its factorization.

80744871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26914960.

The product of its (nonzero) digits is 50176, while the sum is 39.

The square root of 80744871 is about 8985.8149880798. The cubic root of 80744871 is about 432.2201220874.

The spelling of 80744871 in words is "eighty million, seven hundred forty-four thousand, eight hundred seventy-one".