116645813 has 2 divisors, whose sum is σ = 116645814. Its totient is φ = 116645812.

The previous prime is 116645797. The next prime is 116645821. The reversal of 116645813 is 318546611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69338929 + 47306884 = 8327^2 + 6878^2 .

It is a cyclic number.

It is not a de Polignac number, because 116645813 - 2⁴ = 116645797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116645833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58322906 + 58322907.

It is an arithmetic number, because the mean of its divisors is an integer number (58322907).

Almost surely, 2^116645813 is an apocalyptic number.

It is an amenable number.

116645813 is a deficient number, since it is larger than the sum of its proper divisors (1).

116645813 is an equidigital number, since it uses as much as digits as its factorization.

116645813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 35.

The square root of 116645813 is about 10800.2691170174. The cubic root of 116645813 is about 488.6032875753.

The spelling of 116645813 in words is "one hundred sixteen million, six hundred forty-five thousand, eight hundred thirteen".