79621718 has 16 divisors (see below), whose sum is σ = 130818240. Its totient is φ = 36045000.

The previous prime is 79621709. The next prime is 79621747. The reversal of 79621718 is 81712697.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1688 + ... + 12731.

It is an arithmetic number, because the mean of its divisors is an integer number (8176140).

Almost surely, 2^79621718 is an apocalyptic number.

79621718 is a deficient number, since it is larger than the sum of its proper divisors (51196522).

79621718 is a wasteful number, since it uses less digits than its factorization.

79621718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14683.

The product of its digits is 42336, while the sum is 41.

The square root of 79621718 is about 8923.1002459907. The cubic root of 79621718 is about 430.2067115016.

The spelling of 79621718 in words is "seventy-nine million, six hundred twenty-one thousand, seven hundred eighteen".