117331665 has 32 divisors (see below), whose sum is σ = 208676736. Its totient is φ = 55810560.

The previous prime is 117331663. The next prime is 117331691. The reversal of 117331665 is 566133711.

It is a happy number.

It is not a de Polignac number, because 117331665 - 2¹ = 117331663 is a prime.

It is a super-2 number, since 2×117331665² = 27533439223344450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (117331661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2037 + ... + 15453.

It is an arithmetic number, because the mean of its divisors is an integer number (6521148).

Almost surely, 2^117331665 is an apocalyptic number.

117331665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

117331665 is a deficient number, since it is larger than the sum of its proper divisors (91345071).

117331665 is a wasteful number, since it uses less digits than its factorization.

117331665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13489.

The product of its digits is 11340, while the sum is 33.

The square root of 117331665 is about 10831.9741967935. The cubic root of 117331665 is about 489.5590438088.

The spelling of 117331665 in words is "one hundred seventeen million, three hundred thirty-one thousand, six hundred sixty-five".