491624 has 16 divisors (see below), whose sum is σ = 1053600. Its totient is φ = 210672.

The previous prime is 491611. The next prime is 491627. The reversal of 491624 is 426194.

It is a junction number, because it is equal to n+sod(n) for n = 491593 and 491602.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 491624.

It is not an unprimeable number, because it can be changed into a prime (491627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4334 + ... + 4445.

It is an arithmetic number, because the mean of its divisors is an integer number (65850).

2⁴⁹¹⁶²⁴ is an apocalyptic number.

It is an amenable number.

491624 is an abundant number, since it is smaller than the sum of its proper divisors (561976).

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

491624 is a wasteful number, since it uses less digits than its factorization.

491624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8792 (or 8788 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 491624 is about 701.1590404466. The cubic root of 491624 is about 78.9243520897.

The spelling of 491624 in words is "four hundred ninety-one thousand, six hundred twenty-four".