516040669 has 2 divisors, whose sum is σ = 516040670. Its totient is φ = 516040668.

The previous prime is 516040649. The next prime is 516040691. The reversal of 516040669 is 966040615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 297148644 + 218892025 = 17238^2 + 14795^2 .

It is a cyclic number.

It is not a de Polignac number, because 516040669 - 2⁹ = 516040157 is a prime.

It is a super-2 number, since 2×516040669² = 532595944123935122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (516040619) 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, 258020334 + 258020335.

It is an arithmetic number, because the mean of its divisors is an integer number (258020335).

Almost surely, 2^516040669 is an apocalyptic number.

It is an amenable number.

516040669 is a deficient number, since it is larger than the sum of its proper divisors (1).

516040669 is an equidigital number, since it uses as much as digits as its factorization.

516040669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 516040669 is about 22716.5285420110. The cubic root of 516040669 is about 802.0990030205.

The spelling of 516040669 in words is "five hundred sixteen million, forty thousand, six hundred sixty-nine".