565476839 has 2 divisors, whose sum is σ = 565476840. Its totient is φ = 565476838.

The previous prime is 565476833. The next prime is 565476869. The reversal of 565476839 is 938674565.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 565476839 - 2⁴ = 565476823 is a prime.

It is a super-3 number, since 3×565476839³ (a number of 27 digits) contains 333 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 (565476833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282738419 + 282738420.

It is an arithmetic number, because the mean of its divisors is an integer number (282738420).

Almost surely, 2^565476839 is an apocalyptic number.

565476839 is a deficient number, since it is larger than the sum of its proper divisors (1).

565476839 is an equidigital number, since it uses as much as digits as its factorization.

565476839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5443200, while the sum is 53.

The square root of 565476839 is about 23779.7569163354. The cubic root of 565476839 is about 826.9354444008.

The spelling of 565476839 in words is "five hundred sixty-five million, four hundred seventy-six thousand, eight hundred thirty-nine".