491608 has 32 divisors (see below), whose sum is σ = 1033200. Its totient is φ = 217728.

The previous prime is 491593. The next prime is 491611. The reversal of 491608 is 806194.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2935 + ... + 3097.

2⁴⁹¹⁶⁰⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (516600).

491608 is an abundant number, since it is smaller than the sum of its proper divisors (541592).

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

491608 is a wasteful number, since it uses less digits than its factorization.

491608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 207 counting only the distinct ones).

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

The square root of 491608 is about 701.1476306742. The cubic root of 491608 is about 78.9234958775.

The spelling of 491608 in words is "four hundred ninety-one thousand, six hundred eight".