117645867 has 6 divisors (see below), whose sum is σ = 169932932. Its totient is φ = 78430572.

The previous prime is 117645833. The next prime is 117645883. The reversal of 117645867 is 768546711.

117645867 is a `hidden beast` number, since 1 + 1 + 7 + 64 + 586 + 7 = 666.

It is not a de Polignac number, because 117645867 - 2¹⁴ = 117629483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117625867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6535873 + ... + 6535890.

Almost surely, 2^117645867 is an apocalyptic number.

117645867 is a deficient number, since it is larger than the sum of its proper divisors (52287065).

117645867 is a wasteful number, since it uses less digits than its factorization.

117645867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13071769 (or 13071766 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 117645867 is about 10846.4679504436. The cubic root of 117645867 is about 489.9956503848.

The spelling of 117645867 in words is "one hundred seventeen million, six hundred forty-five thousand, eight hundred sixty-seven".