80711679 has 4 divisors (see below), whose sum is σ = 107615576. Its totient is φ = 53807784.

The previous prime is 80711641. The next prime is 80711681. The reversal of 80711679 is 97611708.

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

It is not a de Polignac number, because 80711679 - 2¹¹ = 80709631 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 (80711179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13451944 + ... + 13451949.

It is an arithmetic number, because the mean of its divisors is an integer number (26903894).

Almost surely, 2^80711679 is an apocalyptic number.

80711679 is a deficient number, since it is larger than the sum of its proper divisors (26903897).

80711679 is a wasteful number, since it uses less digits than its factorization.

80711679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26903896.

The product of its (nonzero) digits is 21168, while the sum is 39.

The square root of 80711679 is about 8983.9678872979. The cubic root of 80711679 is about 432.1608893611.

The spelling of 80711679 in words is "eighty million, seven hundred eleven thousand, six hundred seventy-nine".