117564899 has 4 divisors (see below), whose sum is σ = 117801000. Its totient is φ = 117328800.

The previous prime is 117564871. The next prime is 117564901. The reversal of 117564899 is 998465711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 998465711 = 3001 ⋅332711.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117564899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117567899) 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, 117302 + ... + 118299.

It is an arithmetic number, because the mean of its divisors is an integer number (29450250).

Almost surely, 2^117564899 is an apocalyptic number.

117564899 is a deficient number, since it is larger than the sum of its proper divisors (236101).

117564899 is an equidigital number, since it uses as much as digits as its factorization.

117564899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236100.

The product of its digits is 544320, while the sum is 50.

The square root of 117564899 is about 10842.7348487363. The cubic root of 117564899 is about 489.8832138724.

The spelling of 117564899 in words is "one hundred seventeen million, five hundred sixty-four thousand, eight hundred ninety-nine".