564890 has 8 divisors (see below), whose sum is σ = 1016820. Its totient is φ = 225952.

The previous prime is 564881. The next prime is 564899. The reversal of 564890 is 98465.

564890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (564881) and next prime (564899).

It can be written as a sum of positive squares in 2 ways, for example, as 546121 + 18769 = 739^2 + 137^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (564899) 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, 28235 + ... + 28254.

2⁵⁶⁴⁸⁹⁰ is an apocalyptic number.

564890 is a deficient number, since it is larger than the sum of its proper divisors (451930).

564890 is a wasteful number, since it uses less digits than its factorization.

564890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56496.

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

The square root of 564890 is about 751.5916444453. The cubic root of 564890 is about 82.6649287125.

The spelling of 564890 in words is "five hundred sixty-four thousand, eight hundred ninety".