117640361 has 2 divisors, whose sum is σ = 117640362. Its totient is φ = 117640360.

The previous prime is 117640349. The next prime is 117640363. The reversal of 117640361 is 163046711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103652761 + 13987600 = 10181^2 + 3740^2 .

It is a cyclic number.

It is not a de Polignac number, because 117640361 - 2¹⁴ = 117623977 is a prime.

Together with 117640363, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (117640363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58820180 + 58820181.

It is an arithmetic number, because the mean of its divisors is an integer number (58820181).

Almost surely, 2^117640361 is an apocalyptic number.

It is an amenable number.

117640361 is a deficient number, since it is larger than the sum of its proper divisors (1).

117640361 is an equidigital number, since it uses as much as digits as its factorization.

117640361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 117640361 is about 10846.2141321292. The cubic root of 117640361 is about 489.9880060927.

The spelling of 117640361 in words is "one hundred seventeen million, six hundred forty thousand, three hundred sixty-one".