516396689 has 2 divisors, whose sum is σ = 516396690. Its totient is φ = 516396688.

The previous prime is 516396653. The next prime is 516396719. The reversal of 516396689 is 986693615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 491065600 + 25331089 = 22160^2 + 5033^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-516396689 is a prime.

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 516396689.

It is not a weakly prime, because it can be changed into another prime (516396619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258198344 + 258198345.

It is an arithmetic number, because the mean of its divisors is an integer number (258198345).

Almost surely, 2^516396689 is an apocalyptic number.

It is an amenable number.

516396689 is a deficient number, since it is larger than the sum of its proper divisors (1).

516396689 is an equidigital number, since it uses as much as digits as its factorization.

516396689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2099520, while the sum is 53.

The square root of 516396689 is about 22724.3633354160. The cubic root of 516396689 is about 802.2834184866.

The spelling of 516396689 in words is "five hundred sixteen million, three hundred ninety-six thousand, six hundred eighty-nine".