516774689 has 2 divisors, whose sum is σ = 516774690. Its totient is φ = 516774688.

The previous prime is 516774667. The next prime is 516774719. The reversal of 516774689 is 986477615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 450840289 + 65934400 = 21233^2 + 8120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-516774689 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 516774689.

It is not a weakly prime, because it can be changed into another prime (516774389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258387344 + 258387345.

It is an arithmetic number, because the mean of its divisors is an integer number (258387345).

Almost surely, 2^516774689 is an apocalyptic number.

It is an amenable number.

516774689 is a deficient number, since it is larger than the sum of its proper divisors (1).

516774689 is an equidigital number, since it uses as much as digits as its factorization.

516774689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 53.

The square root of 516774689 is about 22732.6788786540. The cubic root of 516774689 is about 802.4791266653.

The spelling of 516774689 in words is "five hundred sixteen million, seven hundred seventy-four thousand, six hundred eighty-nine".