491860 has 12 divisors (see below), whose sum is σ = 1032948. Its totient is φ = 196736.

The previous prime is 491857. The next prime is 491867. The reversal of 491860 is 68194.

It can be written as a sum of positive squares in 2 ways, for example, as 104976 + 386884 = 324^2 + 622^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12277 + ... + 12316.

It is an arithmetic number, because the mean of its divisors is an integer number (86079).

2⁴⁹¹⁸⁶⁰ is an apocalyptic number.

It is an amenable number.

491860 is an abundant number, since it is smaller than the sum of its proper divisors (541088).

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

491860 is a wasteful number, since it uses less digits than its factorization.

491860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24602 (or 24600 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 491860 is about 701.3273130287. The cubic root of 491860 is about 78.9369790617.

The spelling of 491860 in words is "four hundred ninety-one thousand, eight hundred sixty".