79711671 has 16 divisors (see below), whose sum is σ = 116895744. Its totient is φ = 48008544.

The previous prime is 79711661. The next prime is 79711679. The reversal of 79711671 is 17611797.

It is not a de Polignac number, because 79711671 - 2⁶ = 79711607 is a prime.

It is a super-2 number, since 2×79711671² = 12707900987224482, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79711679) 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 15 ways as a sum of consecutive naturals, for example, 19911 + ... + 23576.

It is an arithmetic number, because the mean of its divisors is an integer number (7305984).

Almost surely, 2^79711671 is an apocalyptic number.

79711671 is a deficient number, since it is larger than the sum of its proper divisors (37184073).

79711671 is a wasteful number, since it uses less digits than its factorization.

79711671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43550.

The product of its digits is 18522, while the sum is 39.

The square root of 79711671 is about 8928.1392798276. The cubic root of 79711671 is about 430.3686598628.

The spelling of 79711671 in words is "seventy-nine million, seven hundred eleven thousand, six hundred seventy-one".