117664147 has 4 divisors (see below), whose sum is σ = 117686200. Its totient is φ = 117642096.

The previous prime is 117664139. The next prime is 117664177. The reversal of 117664147 is 741466711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 117664147 - 2³ = 117664139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117664177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2548 + ... + 15550.

It is an arithmetic number, because the mean of its divisors is an integer number (29421550).

Almost surely, 2^117664147 is an apocalyptic number.

117664147 is a deficient number, since it is larger than the sum of its proper divisors (22053).

117664147 is an equidigital number, since it uses as much as digits as its factorization.

117664147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22052.

The product of its digits is 28224, while the sum is 37.

The square root of 117664147 is about 10847.3105883440. The cubic root of 117664147 is about 490.0210278356.

The spelling of 117664147 in words is "one hundred seventeen million, six hundred sixty-four thousand, one hundred forty-seven".