117505679 has 2 divisors, whose sum is σ = 117505680. Its totient is φ = 117505678.

The previous prime is 117505669. The next prime is 117505681. The reversal of 117505679 is 976505711.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117505679 is a prime.

Together with 117505681, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117505669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58752839 + 58752840.

It is an arithmetic number, because the mean of its divisors is an integer number (58752840).

Almost surely, 2^117505679 is an apocalyptic number.

117505679 is a deficient number, since it is larger than the sum of its proper divisors (1).

117505679 is an equidigital number, since it uses as much as digits as its factorization.

117505679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 66150, while the sum is 41.

The square root of 117505679 is about 10840.0036439108. The cubic root of 117505679 is about 489.8009451094.

The spelling of 117505679 in words is "one hundred seventeen million, five hundred five thousand, six hundred seventy-nine".