491650 has 12 divisors (see below), whose sum is σ = 914562. Its totient is φ = 196640.

The previous prime is 491639. The next prime is 491651. The reversal of 491650 is 56194.

It can be written as a sum of positive squares in 3 ways, for example, as 368449 + 123201 = 607^2 + 351^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (491651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4867 + ... + 4966.

2⁴⁹¹⁶⁵⁰ is an apocalyptic number.

491650 is a deficient number, since it is larger than the sum of its proper divisors (422912).

491650 is a wasteful number, since it uses less digits than its factorization.

491650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9845 (or 9840 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 491650 is about 701.1775809308. The cubic root of 491650 is about 78.9257433948.

The spelling of 491650 in words is "four hundred ninety-one thousand, six hundred fifty".