117700561 has 4 divisors (see below), whose sum is σ = 128400624. Its totient is φ = 107000500.

The previous prime is 117700553. The next prime is 117700567. The reversal of 117700561 is 165007711.

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.

It is a cyclic number.

It is not a de Polignac number, because 117700561 - 2³ = 117700553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (117700567) 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, 5350015 + ... + 5350036.

It is an arithmetic number, because the mean of its divisors is an integer number (32100156).

Almost surely, 2^117700561 is an apocalyptic number.

117700561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

117700561 is a deficient number, since it is larger than the sum of its proper divisors (10700063).

117700561 is a wasteful number, since it uses less digits than its factorization.

117700561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10700062.

The product of its (nonzero) digits is 1470, while the sum is 28.

The square root of 117700561 is about 10848.9889390671. The cubic root of 117700561 is about 490.0715722191.

The spelling of 117700561 in words is "one hundred seventeen million, seven hundred thousand, five hundred sixty-one".