79617887 has 8 divisors (see below), whose sum is σ = 80993520. Its totient is φ = 78253120.

The previous prime is 79617883. The next prime is 79617899. The reversal of 79617887 is 78871697.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79617887 - 2² = 79617883 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 (79617883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12812 + ... + 17982.

It is an arithmetic number, because the mean of its divisors is an integer number (10124190).

Almost surely, 2^79617887 is an apocalyptic number.

79617887 is a deficient number, since it is larger than the sum of its proper divisors (1375633).

79617887 is a wasteful number, since it uses less digits than its factorization.

79617887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5433.

The product of its digits is 1185408, while the sum is 53.

The square root of 79617887 is about 8922.8855758661. The cubic root of 79617887 is about 430.1998115904.

The spelling of 79617887 in words is "seventy-nine million, six hundred seventeen thousand, eight hundred eighty-seven".