79710857 has 4 divisors (see below), whose sum is σ = 79780560. Its totient is φ = 79641156.

The previous prime is 79710853. The next prime is 79710859. The reversal of 79710857 is 75801797.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75801797 = 7639 ⋅9923.

It is a cyclic number.

It is not a de Polignac number, because 79710857 - 2² = 79710853 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79710853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33107 + ... + 35432.

It is an arithmetic number, because the mean of its divisors is an integer number (19945140).

Almost surely, 2^79710857 is an apocalyptic number.

It is an amenable number.

79710857 is a deficient number, since it is larger than the sum of its proper divisors (69703).

79710857 is a wasteful number, since it uses less digits than its factorization.

79710857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69702.

The product of its (nonzero) digits is 123480, while the sum is 44.

The square root of 79710857 is about 8928.0936935048. The cubic root of 79710857 is about 430.3671949109.

The spelling of 79710857 in words is "seventy-nine million, seven hundred ten thousand, eight hundred fifty-seven".