491610 has 32 divisors (see below), whose sum is σ = 1348992. Its totient is φ = 112320.

The previous prime is 491593. The next prime is 491611. The reversal of 491610 is 16194.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (491611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 961 + ... + 1380.

It is an arithmetic number, because the mean of its divisors is an integer number (42156).

2⁴⁹¹⁶¹⁰ is an apocalyptic number.

491610 is an abundant number, since it is smaller than the sum of its proper divisors (857382).

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

491610 is a wasteful number, since it uses less digits than its factorization.

491610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 491610 is about 701.1490569059. The cubic root of 491610 is about 78.9236029051.

The spelling of 491610 in words is "four hundred ninety-one thousand, six hundred ten".