565698649 has 2 divisors, whose sum is σ = 565698650. Its totient is φ = 565698648.

The previous prime is 565698631. The next prime is 565698703. The reversal of 565698649 is 946896565.

565698649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 446561424 + 119137225 = 21132^2 + 10915^2 .

It is a cyclic number.

It is not a de Polignac number, because 565698649 - 2¹¹ = 565696601 is a prime.

It is a super-2 number, since 2×565698649² = 640029922960850402, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 565698593 and 565698602.

It is not a weakly prime, because it can be changed into another prime (565698629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282849324 + 282849325.

It is an arithmetic number, because the mean of its divisors is an integer number (282849325).

Almost surely, 2^565698649 is an apocalyptic number.

It is an amenable number.

565698649 is a deficient number, since it is larger than the sum of its proper divisors (1).

565698649 is an equidigital number, since it uses as much as digits as its factorization.

565698649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13996800, while the sum is 58.

The square root of 565698649 is about 23784.4202998517. The cubic root of 565698649 is about 827.0435529096.

The spelling of 565698649 in words is "five hundred sixty-five million, six hundred ninety-eight thousand, six hundred forty-nine".