117823761 has 16 divisors (see below), whose sum is σ = 190422720. Its totient is φ = 71408160.

The previous prime is 117823759. The next prime is 117823789. The reversal of 117823761 is 167328711.

It is not a de Polignac number, because 117823761 - 2¹ = 117823759 is a prime.

It is not an unprimeable number, because it can be changed into a prime (117823751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198060 + ... + 198653.

It is an arithmetic number, because the mean of its divisors is an integer number (11901420).

Almost surely, 2^117823761 is an apocalyptic number.

117823761 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

117823761 is a deficient number, since it is larger than the sum of its proper divisors (72598959).

117823761 is a wasteful number, since it uses less digits than its factorization.

117823761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396733 (or 396727 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 117823761 is about 10854.6654024894. The cubic root of 117823761 is about 490.2425024834.

The spelling of 117823761 in words is "one hundred seventeen million, eight hundred twenty-three thousand, seven hundred sixty-one".