118577 has 4 divisors (see below), whose sum is σ = 119280. Its totient is φ = 117876.

The previous prime is 118571. The next prime is 118583. The reversal of 118577 is 775811.

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, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (118571) and next prime (118583).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118571) 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, 74 + ... + 492.

It is an arithmetic number, because the mean of its divisors is an integer number (29820).

2¹¹⁸⁵⁷⁷ is an apocalyptic number.

It is an amenable number.

118577 is a deficient number, since it is larger than the sum of its proper divisors (703).

118577 is an equidigital number, since it uses as much as digits as its factorization.

118577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702.

The product of its digits is 1960, while the sum is 29.

The square root of 118577 is about 344.3501125308. The cubic root of 118577 is about 49.1284979391.

It can be divided in two parts, 118 and 577, that multiplied together give a palindrome (68086).

The spelling of 118577 in words is "one hundred eighteen thousand, five hundred seventy-seven".