565381965 has 16 divisors (see below), whose sum is σ = 909351936. Its totient is φ = 299956800.

The previous prime is 565381961. The next prime is 565381991. The reversal of 565381965 is 569183565.

It is a happy number.

It is not a de Polignac number, because 565381965 - 2² = 565381961 is a prime.

It is a super-2 number, since 2×565381965² = 639313532694522450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565381961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95806 + ... + 101535.

It is an arithmetic number, because the mean of its divisors is an integer number (56834496).

Almost surely, 2^565381965 is an apocalyptic number.

It is an amenable number.

565381965 is a deficient number, since it is larger than the sum of its proper divisors (343969971).

565381965 is a wasteful number, since it uses less digits than its factorization.

565381965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197540.

The product of its digits is 972000, while the sum is 48.

The square root of 565381965 is about 23777.7619846780. The cubic root of 565381965 is about 826.8891949019.

The spelling of 565381965 in words is "five hundred sixty-five million, three hundred eighty-one thousand, nine hundred sixty-five".