79660381 has 8 divisors (see below), whose sum is σ = 81861824. Its totient is φ = 77474880.

The previous prime is 79660349. The next prime is 79660391. The reversal of 79660381 is 18306697.

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 79660381 - 2⁵ = 79660349 is a prime.

It is a super-2 number, since 2×79660381² = 12691552602130322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79660391) 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, 6520 + ... + 14206.

It is an arithmetic number, because the mean of its divisors is an integer number (10232728).

Almost surely, 2^79660381 is an apocalyptic number.

It is an amenable number.

79660381 is a deficient number, since it is larger than the sum of its proper divisors (2201443).

79660381 is a wasteful number, since it uses less digits than its factorization.

79660381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7971.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 79660381 is about 8925.2664386000. The cubic root of 79660381 is about 430.2763340073.

The spelling of 79660381 in words is "seventy-nine million, six hundred sixty thousand, three hundred eighty-one".