117807863 has 4 divisors (see below), whose sum is σ = 122929968. Its totient is φ = 112685760.

The previous prime is 117807857. The next prime is 117807871. The reversal of 117807863 is 368708711.

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 117807863 - 2⁶ = 117807799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117807863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117807853) 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, 2561018 + ... + 2561063.

It is an arithmetic number, because the mean of its divisors is an integer number (30732492).

Almost surely, 2^117807863 is an apocalyptic number.

117807863 is a deficient number, since it is larger than the sum of its proper divisors (5122105).

117807863 is an equidigital number, since it uses as much as digits as its factorization.

117807863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5122104.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 117807863 is about 10853.9330659443. The cubic root of 117807863 is about 490.2204519626.

The spelling of 117807863 in words is "one hundred seventeen million, eight hundred seven thousand, eight hundred sixty-three".