116405657 has 2 divisors, whose sum is σ = 116405658. Its totient is φ = 116405656.

The previous prime is 116405587. The next prime is 116405659. The reversal of 116405657 is 756504611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116402521 + 3136 = 10789^2 + 56^2 .

It is a cyclic number.

It is not a de Polignac number, because 116405657 - 2¹² = 116401561 is a prime.

Together with 116405659, 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 (116405659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58202828 + 58202829.

It is an arithmetic number, because the mean of its divisors is an integer number (58202829).

Almost surely, 2^116405657 is an apocalyptic number.

It is an amenable number.

116405657 is a deficient number, since it is larger than the sum of its proper divisors (1).

116405657 is an equidigital number, since it uses as much as digits as its factorization.

116405657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 116405657 is about 10789.1453322309. The cubic root of 116405657 is about 488.2677372186.

The spelling of 116405657 in words is "one hundred sixteen million, four hundred five thousand, six hundred fifty-seven".