491607 has 6 divisors (see below), whose sum is σ = 710112. Its totient is φ = 327732.

The previous prime is 491593. The next prime is 491611. The reversal of 491607 is 706194.

It is not a de Polignac number, because 491607 - 2⁴ = 491591 is a prime.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 491607.

It is not an unprimeable number, because it can be changed into a prime (491627) 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, 27303 + ... + 27320.

It is an arithmetic number, because the mean of its divisors is an integer number (118352).

2⁴⁹¹⁶⁰⁷ is an apocalyptic number.

491607 is a deficient number, since it is larger than the sum of its proper divisors (218505).

491607 is a wasteful number, since it uses less digits than its factorization.

491607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54629 (or 54626 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 491607 is about 701.1469175572. The cubic root of 491607 is about 78.9234423637.

The spelling of 491607 in words is "four hundred ninety-one thousand, six hundred seven".