79320517 has 8 divisors (see below), whose sum is σ = 80153600. Its totient is φ = 78490944.

The previous prime is 79320473. The next prime is 79320529. The reversal of 79320517 is 71502397.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79320517 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 (79320587) 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, 78109 + ... + 79117.

It is an arithmetic number, because the mean of its divisors is an integer number (10019200).

Almost surely, 2^79320517 is an apocalyptic number.

It is an amenable number.

79320517 is a deficient number, since it is larger than the sum of its proper divisors (833083).

79320517 is a wasteful number, since it uses less digits than its factorization.

79320517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1755.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 79320517 is about 8906.2066560349. The cubic root of 79320517 is about 429.6635496874.

The spelling of 79320517 in words is "seventy-nine million, three hundred twenty thousand, five hundred seventeen".