490564 has 12 divisors (see below), whose sum is σ = 888300. Its totient is φ = 236768.

The previous prime is 490559. The next prime is 490571. The reversal of 490564 is 465094.

It can be written as a sum of positive squares in 2 ways, for example, as 412164 + 78400 = 642^2 + 280^2 .

It is an unprimeable number.

490564 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 3 ways as a sum of consecutive naturals, for example, 1999 + ... + 2230.

It is an arithmetic number, because the mean of its divisors is an integer number (74025).

2⁴⁹⁰⁵⁶⁴ is an apocalyptic number.

It is an amenable number.

490564 is a deficient number, since it is larger than the sum of its proper divisors (397736).

490564 is a wasteful number, since it uses less digits than its factorization.

490564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4262 (or 4260 counting only the distinct ones).

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

The square root of 490564 is about 700.4027412853. The cubic root of 490564 is about 78.8675878334.

The spelling of 490564 in words is "four hundred ninety thousand, five hundred sixty-four".