490685 has 8 divisors (see below), whose sum is σ = 634200. Its totient is φ = 362304.

The previous prime is 490663. The next prime is 490697. The reversal of 490685 is 586094.

It can be written as a sum of positive squares in 4 ways, for example, as 45796 + 444889 = 214^2 + 667^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 490685 - 2¹² = 486589 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3710 + ... + 3839.

It is an arithmetic number, because the mean of its divisors is an integer number (79275).

2⁴⁹⁰⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

490685 is a deficient number, since it is larger than the sum of its proper divisors (143515).

490685 is a wasteful number, since it uses less digits than its factorization.

490685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7567.

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

The square root of 490685 is about 700.4891148333. The cubic root of 490685 is about 78.8740716586.

The spelling of 490685 in words is "four hundred ninety thousand, six hundred eighty-five".