513364693 has 2 divisors, whose sum is σ = 513364694. Its totient is φ = 513364692.

The previous prime is 513364633. The next prime is 513364697. The reversal of 513364693 is 396463315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 509766084 + 3598609 = 22578^2 + 1897^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-513364693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513364697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256682346 + 256682347.

It is an arithmetic number, because the mean of its divisors is an integer number (256682347).

Almost surely, 2^513364693 is an apocalyptic number.

It is an amenable number.

513364693 is a deficient number, since it is larger than the sum of its proper divisors (1).

513364693 is an equidigital number, since it uses as much as digits as its factorization.

513364693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 40.

The square root of 513364693 is about 22657.5526701363. The cubic root of 513364693 is about 800.7101470316.

The spelling of 513364693 in words is "five hundred thirteen million, three hundred sixty-four thousand, six hundred ninety-three".