79618680 has 64 divisors (see below), whose sum is σ = 265399200. Its totient is φ = 21231360.

The previous prime is 79618639. The next prime is 79618687. The reversal of 79618680 is 8681697.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79618687) 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, 35781 + ... + 37940.

Almost surely, 2^79618680 is an apocalyptic number.

It is an amenable number.

79618680 is an abundant number, since it is smaller than the sum of its proper divisors (185780520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79618680 is a wasteful number, since it uses less digits than its factorization.

79618680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73741 (or 73731 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 79618680 is about 8922.9300120532. The cubic root of 79618680 is about 430.2012398596.

It can be divided in two parts, 7961 and 8680, that added together give a square (16641 = 129²).

The spelling of 79618680 in words is "seventy-nine million, six hundred eighteen thousand, six hundred eighty".