490686 has 24 divisors (see below), whose sum is σ = 1142280. Its totient is φ = 140112.

The previous prime is 490663. The next prime is 490697. The reversal of 490686 is 686094.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 541 + ... + 1128.

It is an arithmetic number, because the mean of its divisors is an integer number (47595).

2⁴⁹⁰⁶⁸⁶ is an apocalyptic number.

490686 is an abundant number, since it is smaller than the sum of its proper divisors (651594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

490686 is a wasteful number, since it uses less digits than its factorization.

490686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688 (or 1681 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 490686 is about 700.4898286199. The cubic root of 490686 is about 78.8741252395.

It can be divided in two parts, 490 and 686, that added together give a triangular number (1176 = T₄₈).

The spelling of 490686 in words is "four hundred ninety thousand, six hundred eighty-six".