118705561 has 8 divisors (see below), whose sum is σ = 127932224. Its totient is φ = 109492560.

The previous prime is 118705549. The next prime is 118705567. The reversal of 118705561 is 165507811.

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 118705561 - 2⁵ = 118705529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118705567) 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, 21310 + ... + 26296.

It is an arithmetic number, because the mean of its divisors is an integer number (15991528).

Almost surely, 2^118705561 is an apocalyptic number.

It is an amenable number.

118705561 is a deficient number, since it is larger than the sum of its proper divisors (9226663).

118705561 is a wasteful number, since it uses less digits than its factorization.

118705561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6831.

The product of its (nonzero) digits is 8400, while the sum is 34.

The square root of 118705561 is about 10895.2081668961. The cubic root of 118705561 is about 491.4624654014.

The spelling of 118705561 in words is "one hundred eighteen million, seven hundred five thousand, five hundred sixty-one".