117692609 has 2 divisors, whose sum is σ = 117692610. Its totient is φ = 117692608.

The previous prime is 117692599. The next prime is 117692623. The reversal of 117692609 is 906296711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67240000 + 50452609 = 8200^2 + 7103^2 .

It is a cyclic number.

It is not a de Polignac number, because 117692609 - 2¹² = 117688513 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (117692639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58846304 + 58846305.

It is an arithmetic number, because the mean of its divisors is an integer number (58846305).

Almost surely, 2^117692609 is an apocalyptic number.

It is an amenable number.

117692609 is a deficient number, since it is larger than the sum of its proper divisors (1).

117692609 is an equidigital number, since it uses as much as digits as its factorization.

117692609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 117692609 is about 10848.6224471128. The cubic root of 117692609 is about 490.0605353504.

The spelling of 117692609 in words is "one hundred seventeen million, six hundred ninety-two thousand, six hundred nine".