117718061 has 2 divisors, whose sum is σ = 117718062. Its totient is φ = 117718060.

The previous prime is 117718057. The next prime is 117718063. The reversal of 117718061 is 160817711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100120036 + 17598025 = 10006^2 + 4195^2 .

It is a cyclic number.

It is not a de Polignac number, because 117718061 - 2² = 117718057 is a prime.

Together with 117718063, 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 (117718063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58859030 + 58859031.

It is an arithmetic number, because the mean of its divisors is an integer number (58859031).

Almost surely, 2^117718061 is an apocalyptic number.

It is an amenable number.

117718061 is a deficient number, since it is larger than the sum of its proper divisors (1).

117718061 is an equidigital number, since it uses as much as digits as its factorization.

117718061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 32.

The square root of 117718061 is about 10849.7954358596. The cubic root of 117718061 is about 490.0958593520.

The spelling of 117718061 in words is "one hundred seventeen million, seven hundred eighteen thousand, sixty-one".