564870289 has 3 divisors (see below), whose sum is σ = 564894057. Its totient is φ = 564846522.

The previous prime is 564870283. The next prime is 564870329. The reversal of 564870289 is 982078465.

The square root of 564870289 is 23767.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 982078465 = 5 ⋅196415693.

It is not a de Polignac number, because 564870289 - 2³ = 564870281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (564870281) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 11884 + ... + 35650.

It is an arithmetic number, because the mean of its divisors is an integer number (188298019).

Almost surely, 2^564870289 is an apocalyptic number.

564870289 is the 23767-th square number.

564870289 is the 11884-th centered octagonal number.

It is an amenable number.

564870289 is a deficient number, since it is larger than the sum of its proper divisors (23768).

564870289 is an frugal number, since it uses more digits than its factorization.

564870289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47534 (or 23767 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 49.

The cubic root of 564870289 is about 826.6396721118.

Multiplying 564870289 by its sum of digits (49), we get a square (27678644161 = 166369²).

The spelling of 564870289 in words is "five hundred sixty-four million, eight hundred seventy thousand, two hundred eighty-nine".