564490 has 16 divisors (see below), whose sum is σ = 1069920. Its totient is φ = 213840.

The previous prime is 564467. The next prime is 564491. The reversal of 564490 is 94465.

564490 = 334² + 335² + ... + 338².

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (564491) by changing a digit.

564490 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1296 + ... + 1675.

It is an arithmetic number, because the mean of its divisors is an integer number (66870).

2⁵⁶⁴⁴⁹⁰ is an apocalyptic number.

564490 is a deficient number, since it is larger than the sum of its proper divisors (505430).

564490 is a wasteful number, since it uses less digits than its factorization.

564490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2997.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 564490 is about 751.3254953747. The cubic root of 564490 is about 82.6454123587.

The spelling of 564490 in words is "five hundred sixty-four thousand, four hundred ninety".