118577885 has 4 divisors (see below), whose sum is σ = 142293468. Its totient is φ = 94862304.

The previous prime is 118577843. The next prime is 118577891. The reversal of 118577885 is 588775811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 588775811 = 13 ⋅45290447.

It can be written as a sum of positive squares in 2 ways, for example, as 60543961 + 58033924 = 7781^2 + 7618^2 .

It is a cyclic number.

It is not a de Polignac number, because 118577885 - 2⁸ = 118577629 is a prime.

It is a super-2 number, since 2×118577885² = 28121429622146450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11857784 + ... + 11857793.

It is an arithmetic number, because the mean of its divisors is an integer number (35573367).

Almost surely, 2^118577885 is an apocalyptic number.

It is an amenable number.

118577885 is a deficient number, since it is larger than the sum of its proper divisors (23715583).

118577885 is an equidigital number, since it uses as much as digits as its factorization.

118577885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23715582.

The product of its digits is 627200, while the sum is 50.

The square root of 118577885 is about 10889.3473174475. The cubic root of 118577885 is about 491.2862016239.

The spelling of 118577885 in words is "one hundred eighteen million, five hundred seventy-seven thousand, eight hundred eighty-five".