897564 has 12 divisors (see below), whose sum is σ = 2094344. Its totient is φ = 299184.

The previous prime is 897563. The next prime is 897571. The reversal of 897564 is 465798.

897564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×897564² = 1611242268192, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897563) 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, 37387 + ... + 37410.

2⁸⁹⁷⁵⁶⁴ is an apocalyptic number.

It is an amenable number.

897564 is an abundant number, since it is smaller than the sum of its proper divisors (1196780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

897564 is a wasteful number, since it uses less digits than its factorization.

897564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74804 (or 74802 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 897564 is about 947.3985433808. The cubic root of 897564 is about 96.4617511530.

The spelling of 897564 in words is "eight hundred ninety-seven thousand, five hundred sixty-four".