117866877 has 4 divisors (see below), whose sum is σ = 157155840. Its totient is φ = 78577916.

The previous prime is 117866851. The next prime is 117866891. The reversal of 117866877 is 778668711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 117866877 - 2⁸ = 117866621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117866807) 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, 19644477 + ... + 19644482.

It is an arithmetic number, because the mean of its divisors is an integer number (39288960).

Almost surely, 2^117866877 is an apocalyptic number.

It is an amenable number.

117866877 is a deficient number, since it is larger than the sum of its proper divisors (39288963).

117866877 is an equidigital number, since it uses as much as digits as its factorization.

117866877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39288962.

The product of its digits is 790272, while the sum is 51.

The square root of 117866877 is about 10856.6512792850. The cubic root of 117866877 is about 490.3022943787.

The spelling of 117866877 in words is "one hundred seventeen million, eight hundred sixty-six thousand, eight hundred seventy-seven".