999960613 has 2 divisors, whose sum is σ = 999960614. Its totient is φ = 999960612.

The previous prime is 999960601. The next prime is 999960667. The reversal of 999960613 is 316069999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 868009444 + 131951169 = 29462^2 + 11487^2 .

It is a cyclic number.

It is not a de Polignac number, because 999960613 - 2²⁹ = 463089701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999960683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499980306 + 499980307.

It is an arithmetic number, because the mean of its divisors is an integer number (499980307).

Almost surely, 2^999960613 is an apocalyptic number.

It is an amenable number.

999960613 is a deficient number, since it is larger than the sum of its proper divisors (1).

999960613 is an equidigital number, since it uses as much as digits as its factorization.

999960613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 708588, while the sum is 52.

The square root of 999960613 is about 31622.1538324005. The cubic root of 999960613 is about 999.9868708276.

The spelling of 999960613 in words is "nine hundred ninety-nine million, nine hundred sixty thousand, six hundred thirteen".