117658669 has 4 divisors (see below), whose sum is σ = 118316160. Its totient is φ = 117001180.

The previous prime is 117658663. The next prime is 117658679. The reversal of 117658669 is 966856711.

It is a happy number.

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 117658669 - 2⁹ = 117658157 is a prime.

It is a super-2 number, since 2×117658669² = 27687124781703122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117658663) 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, 328477 + ... + 328834.

It is an arithmetic number, because the mean of its divisors is an integer number (29579040).

Almost surely, 2^117658669 is an apocalyptic number.

It is an amenable number.

117658669 is a deficient number, since it is larger than the sum of its proper divisors (657491).

117658669 is an equidigital number, since it uses as much as digits as its factorization.

117658669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657490.

The product of its digits is 544320, while the sum is 49.

The square root of 117658669 is about 10847.0580804198. The cubic root of 117658669 is about 490.0134232058.

The spelling of 117658669 in words is "one hundred seventeen million, six hundred fifty-eight thousand, six hundred sixty-nine".