118647855 has 16 divisors (see below), whose sum is σ = 210929760. Its totient is φ = 63278784.

The previous prime is 118647839. The next prime is 118647871. The reversal of 118647855 is 558746811.

It is an interprime number because it is at equal distance from previous prime (118647839) and next prime (118647871).

It is not a de Polignac number, because 118647855 - 2⁴ = 118647839 is a prime.

It is a super-2 number, since 2×118647855² = 28154626992202050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 118647855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 439302 + ... + 439571.

It is an arithmetic number, because the mean of its divisors is an integer number (13183110).

Almost surely, 2^118647855 is an apocalyptic number.

118647855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

118647855 is a deficient number, since it is larger than the sum of its proper divisors (92281905).

118647855 is an equidigital number, since it uses as much as digits as its factorization.

118647855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878887 (or 878881 counting only the distinct ones).

The product of its digits is 268800, while the sum is 45.

The square root of 118647855 is about 10892.5596165456. The cubic root of 118647855 is about 491.3828147386.

The spelling of 118647855 in words is "one hundred eighteen million, six hundred forty-seven thousand, eight hundred fifty-five".