117541685 has 4 divisors (see below), whose sum is σ = 141050028. Its totient is φ = 94033344.

The previous prime is 117541667. The next prime is 117541687. The reversal of 117541685 is 586145711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 586145711 = 5107 ⋅114773.

It can be written as a sum of positive squares in 2 ways, for example, as 87871876 + 29669809 = 9374^2 + 5447^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117541685 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117541687) 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, 11754164 + ... + 11754173.

It is an arithmetic number, because the mean of its divisors is an integer number (35262507).

Almost surely, 2^117541685 is an apocalyptic number.

It is an amenable number.

117541685 is a deficient number, since it is larger than the sum of its proper divisors (23508343).

117541685 is an equidigital number, since it uses as much as digits as its factorization.

117541685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23508342.

The product of its digits is 33600, while the sum is 38.

The square root of 117541685 is about 10841.6643095053. The cubic root of 117541685 is about 489.8509681437.

The spelling of 117541685 in words is "one hundred seventeen million, five hundred forty-one thousand, six hundred eighty-five".