116500661 has 2 divisors, whose sum is σ = 116500662. Its totient is φ = 116500660.

The previous prime is 116500651. The next prime is 116500663. The reversal of 116500661 is 166005611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63123025 + 53377636 = 7945^2 + 7306^2 .

It is an emirp because it is prime and its reverse (166005611) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116500661 is a prime.

Together with 116500663, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 116500661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116500663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58250330 + 58250331.

It is an arithmetic number, because the mean of its divisors is an integer number (58250331).

Almost surely, 2^116500661 is an apocalyptic number.

It is an amenable number.

116500661 is a deficient number, since it is larger than the sum of its proper divisors (1).

116500661 is an equidigital number, since it uses as much as digits as its factorization.

116500661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 116500661 is about 10793.5471926517. The cubic root of 116500661 is about 488.4005336691.

The spelling of 116500661 in words is "one hundred sixteen million, five hundred thousand, six hundred sixty-one".