565490 has 16 divisors (see below), whose sum is σ = 1026648. Its totient is φ = 224256.

The previous prime is 565489. The next prime is 565507. The reversal of 565490 is 94565.

It can be written as a sum of positive squares in 4 ways, for example, as 508369 + 57121 = 713^2 + 239^2 .

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1784 + ... + 2076.

2⁵⁶⁵⁴⁹⁰ is an apocalyptic number.

565490 is a deficient number, since it is larger than the sum of its proper divisors (461158).

565490 is a wasteful number, since it uses less digits than its factorization.

565490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 565490 is about 751.9906914317. The cubic root of 565490 is about 82.6941859761.

The spelling of 565490 in words is "five hundred sixty-five thousand, four hundred ninety".