516926689 has 2 divisors, whose sum is σ = 516926690. Its totient is φ = 516926688.

The previous prime is 516926687. The next prime is 516926713. The reversal of 516926689 is 986629615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 290123089 + 226803600 = 17033^2 + 15060^2 .

It is a cyclic number.

It is not a de Polignac number, because 516926689 - 2¹ = 516926687 is a prime.

Together with 516926687, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (516926681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258463344 + 258463345.

It is an arithmetic number, because the mean of its divisors is an integer number (258463345).

Almost surely, 2^516926689 is an apocalyptic number.

It is an amenable number.

516926689 is a deficient number, since it is larger than the sum of its proper divisors (1).

516926689 is an equidigital number, since it uses as much as digits as its factorization.

516926689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 52.

The square root of 516926689 is about 22736.0218376039. The cubic root of 516926689 is about 802.5577972302.

The spelling of 516926689 in words is "five hundred sixteen million, nine hundred twenty-six thousand, six hundred eighty-nine".