80679911 has 16 divisors (see below), whose sum is σ = 89849760. Its totient is φ = 71971200.

The previous prime is 80679899. The next prime is 80679917. The reversal of 80679911 is 11997608.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80679911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80679917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55745 + ... + 57173.

It is an arithmetic number, because the mean of its divisors is an integer number (5615610).

Almost surely, 2^80679911 is an apocalyptic number.

80679911 is a deficient number, since it is larger than the sum of its proper divisors (9169849).

80679911 is a wasteful number, since it uses less digits than its factorization.

80679911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586.

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 80679911 is about 8982.1996749126. The cubic root of 80679911 is about 432.1041826204.

The spelling of 80679911 in words is "eighty million, six hundred seventy-nine thousand, nine hundred eleven".