290564 has 12 divisors (see below), whose sum is σ = 538524. Its totient is φ = 136704.

The previous prime is 290557. The next prime is 290593. The reversal of 290564 is 465092.

It can be written as a sum of positive squares in 2 ways, for example, as 153664 + 136900 = 392^2 + 370^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2069 + ... + 2204.

It is an arithmetic number, because the mean of its divisors is an integer number (44877).

2²⁹⁰⁵⁶⁴ is an apocalyptic number.

It is an amenable number.

290564 is a deficient number, since it is larger than the sum of its proper divisors (247960).

290564 is a wasteful number, since it uses less digits than its factorization.

290564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4294 (or 4292 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 290564 is about 539.0398872069. The cubic root of 290564 is about 66.2339417589.

The spelling of 290564 in words is "two hundred ninety thousand, five hundred sixty-four".