565165397 has 8 divisors (see below), whose sum is σ = 577183320. Its totient is φ = 553273600.

The previous prime is 565165387. The next prime is 565165409. The reversal of 565165397 is 793561565.

It can be written as a sum of positive squares in 4 ways, for example, as 270734116 + 294431281 = 16454^2 + 17159^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 565165397 - 2¹⁰ = 565164373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565165387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22448 + ... + 40425.

It is an arithmetic number, because the mean of its divisors is an integer number (72147915).

Almost surely, 2^565165397 is an apocalyptic number.

It is an amenable number.

565165397 is a deficient number, since it is larger than the sum of its proper divisors (12017923).

565165397 is a wasteful number, since it uses less digits than its factorization.

565165397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63063.

The product of its digits is 850500, while the sum is 47.

The square root of 565165397 is about 23773.2075454702. The cubic root of 565165397 is about 826.7836022111.

The spelling of 565165397 in words is "five hundred sixty-five million, one hundred sixty-five thousand, three hundred ninety-seven".