564749 has 4 divisors (see below), whose sum is σ = 570336. Its totient is φ = 559164.

The previous prime is 564713. The next prime is 564761. The reversal of 564749 is 947465.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 947465 = 5 ⋅189493.

It is a cyclic number.

It is not a de Polignac number, because 564749 - 2¹² = 560653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564709) 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, 2639 + ... + 2844.

It is an arithmetic number, because the mean of its divisors is an integer number (142584).

2⁵⁶⁴⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

564749 is a deficient number, since it is larger than the sum of its proper divisors (5587).

564749 is a wasteful number, since it uses less digits than its factorization.

564749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5586.

The product of its digits is 30240, while the sum is 35.

The square root of 564749 is about 751.4978376549. The cubic root of 564749 is about 82.6580502495.

The spelling of 564749 in words is "five hundred sixty-four thousand, seven hundred forty-nine".