79561701 has 12 divisors (see below), whose sum is σ = 115003980. Its totient is φ = 53003520.

The previous prime is 79561693. The next prime is 79561711. The reversal of 79561701 is 10716597.

It can be written as a sum of positive squares in 2 ways, for example, as 62964225 + 16597476 = 7935^2 + 4074^2 .

It is not a de Polignac number, because 79561701 - 2³ = 79561693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79561711) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17205 + ... + 21333.

It is an arithmetic number, because the mean of its divisors is an integer number (9583665).

Almost surely, 2^79561701 is an apocalyptic number.

It is an amenable number.

79561701 is a deficient number, since it is larger than the sum of its proper divisors (35442279).

79561701 is a wasteful number, since it uses less digits than its factorization.

79561701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6276 (or 6273 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 36.

The square root of 79561701 is about 8919.7365992500. The cubic root of 79561701 is about 430.0985910582.

The spelling of 79561701 in words is "seventy-nine million, five hundred sixty-one thousand, seven hundred one".