516662693 has 2 divisors, whose sum is σ = 516662694. Its totient is φ = 516662692.

The previous prime is 516662659. The next prime is 516662723. The reversal of 516662693 is 396266615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 391960804 + 124701889 = 19798^2 + 11167^2 .

It is a cyclic number.

It is not a de Polignac number, because 516662693 - 2⁸ = 516662437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (516662093) 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, 258331346 + 258331347.

It is an arithmetic number, because the mean of its divisors is an integer number (258331347).

Almost surely, 2^516662693 is an apocalyptic number.

It is an amenable number.

516662693 is a deficient number, since it is larger than the sum of its proper divisors (1).

516662693 is an equidigital number, since it uses as much as digits as its factorization.

516662693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 44.

The square root of 516662693 is about 22730.2154191288. The cubic root of 516662693 is about 802.4211510798.

The spelling of 516662693 in words is "five hundred sixteen million, six hundred sixty-two thousand, six hundred ninety-three".