890564 has 12 divisors (see below), whose sum is σ = 1582224. Its totient is φ = 438504.

The previous prime is 890563. The next prime is 890597. The reversal of 890564 is 465098.

890564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 890564.

It is not an unprimeable number, because it can be changed into a prime (890563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1394 + ... + 1929.

It is an arithmetic number, because the mean of its divisors is an integer number (131852).

2⁸⁹⁰⁵⁶⁴ is an apocalyptic number.

It is an amenable number.

890564 is a deficient number, since it is larger than the sum of its proper divisors (691660).

890564 is a wasteful number, since it uses less digits than its factorization.

890564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3394 (or 3392 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 890564 is about 943.6969852659. The cubic root of 890564 is about 96.2103316604.

The spelling of 890564 in words is "eight hundred ninety thousand, five hundred sixty-four".