117236661 has 4 divisors (see below), whose sum is σ = 156315552. Its totient is φ = 78157772.

The previous prime is 117236653. The next prime is 117236663. The reversal of 117236661 is 166632711.

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 117236661 - 2³ = 117236653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117236663) 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, 19539441 + ... + 19539446.

It is an arithmetic number, because the mean of its divisors is an integer number (39078888).

Almost surely, 2^117236661 is an apocalyptic number.

It is an amenable number.

117236661 is a deficient number, since it is larger than the sum of its proper divisors (39078891).

117236661 is an equidigital number, since it uses as much as digits as its factorization.

117236661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39078890.

The product of its digits is 9072, while the sum is 33.

The square root of 117236661 is about 10827.5879585437. The cubic root of 117236661 is about 489.4268753778.

The spelling of 117236661 in words is "one hundred seventeen million, two hundred thirty-six thousand, six hundred sixty-one".