565656313 has 4 divisors (see below), whose sum is σ = 568781668. Its totient is φ = 562530960.

The previous prime is 565656251. The next prime is 565656331. The reversal of 565656313 is 313656565.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313656565 = 5 ⋅62731313.

It can be written as a sum of positive squares in 2 ways, for example, as 12089529 + 553566784 = 3477^2 + 23528^2 .

It is a cyclic number.

It is not a de Polignac number, because 565656313 - 2⁹ = 565655801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (565656383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1562406 + ... + 1562767.

It is an arithmetic number, because the mean of its divisors is an integer number (142195417).

Almost surely, 2^565656313 is an apocalyptic number.

It is an amenable number.

565656313 is a deficient number, since it is larger than the sum of its proper divisors (3125355).

565656313 is a wasteful number, since it uses less digits than its factorization.

565656313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3125354.

The product of its digits is 243000, while the sum is 40.

The square root of 565656313 is about 23783.5302888364. The cubic root of 565656313 is about 827.0229208473.

The spelling of 565656313 in words is "five hundred sixty-five million, six hundred fifty-six thousand, three hundred thirteen".