116639641 has 2 divisors, whose sum is σ = 116639642. Its totient is φ = 116639640.

The previous prime is 116639623. The next prime is 116639683. The reversal of 116639641 is 146936611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77951241 + 38688400 = 8829^2 + 6220^2 .

It is a cyclic number.

It is not a de Polignac number, because 116639641 - 2⁵ = 116639609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 116639641.

It is not a weakly prime, because it can be changed into another prime (116639441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58319820 + 58319821.

It is an arithmetic number, because the mean of its divisors is an integer number (58319821).

Almost surely, 2^116639641 is an apocalyptic number.

It is an amenable number.

116639641 is a deficient number, since it is larger than the sum of its proper divisors (1).

116639641 is an equidigital number, since it uses as much as digits as its factorization.

116639641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 37.

The square root of 116639641 is about 10799.9833796168. The cubic root of 116639641 is about 488.5946697129.

The spelling of 116639641 in words is "one hundred sixteen million, six hundred thirty-nine thousand, six hundred forty-one".