118816657 has 8 divisors (see below), whose sum is σ = 122479016. Its totient is φ = 115178112.

The previous prime is 118816631. The next prime is 118816673. The reversal of 118816657 is 756618811.

It can be written as a sum of positive squares in 4 ways, for example, as 51969681 + 66846976 = 7209^2 + 8176^2 .

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-118816657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118816627) 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, 4453 + ... + 16045.

It is an arithmetic number, because the mean of its divisors is an integer number (15309877).

Almost surely, 2^118816657 is an apocalyptic number.

It is an amenable number.

118816657 is a deficient number, since it is larger than the sum of its proper divisors (3662359).

118816657 is a wasteful number, since it uses less digits than its factorization.

118816657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11907.

The product of its digits is 80640, while the sum is 43.

The square root of 118816657 is about 10900.3053626951. The cubic root of 118816657 is about 491.6157367655.

The spelling of 118816657 in words is "one hundred eighteen million, eight hundred sixteen thousand, six hundred fifty-seven".