117685755 has 24 divisors (see below), whose sum is σ = 222534000. Its totient is φ = 57059520.

The previous prime is 117685739. The next prime is 117685759. The reversal of 117685755 is 557586711.

117685755 is a `hidden beast` number, since 1 + 1 + 76 + 8 + 575 + 5 = 666.

It is not a de Polignac number, because 117685755 - 2⁴ = 117685739 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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 117685755.

It is not an unprimeable number, because it can be changed into a prime (117685759) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118380 + ... + 119369.

It is an arithmetic number, because the mean of its divisors is an integer number (9272250).

Almost surely, 2^117685755 is an apocalyptic number.

117685755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

117685755 is a deficient number, since it is larger than the sum of its proper divisors (104848245).

117685755 is a wasteful number, since it uses less digits than its factorization.

117685755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237771 (or 237768 counting only the distinct ones).

The product of its digits is 294000, while the sum is 45.

The square root of 117685755 is about 10848.3065498722. The cubic root of 117685755 is about 490.0510220368.

The spelling of 117685755 in words is "one hundred seventeen million, six hundred eighty-five thousand, seven hundred fifty-five".