79697555 has 16 divisors (see below), whose sum is σ = 109486080. Its totient is φ = 54556512.

The previous prime is 79697551. The next prime is 79697561. The reversal of 79697555 is 55579697.

It is a cyclic number.

It is not a de Polignac number, because 79697555 - 2² = 79697551 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79697497 and 79697506.

It is not an unprimeable number, because it can be changed into a prime (79697551) 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, 23582 + ... + 26748.

It is an arithmetic number, because the mean of its divisors is an integer number (6842880).

Almost surely, 2^79697555 is an apocalyptic number.

79697555 is a deficient number, since it is larger than the sum of its proper divisors (29788525).

79697555 is a wasteful number, since it uses less digits than its factorization.

79697555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3898.

The product of its digits is 2976750, while the sum is 53.

The square root of 79697555 is about 8927.3487105635. The cubic root of 79697555 is about 430.3432539526.

The spelling of 79697555 in words is "seventy-nine million, six hundred ninety-seven thousand, five hundred fifty-five".