491654 has 8 divisors (see below), whose sum is σ = 740880. Its totient is φ = 244696.

The previous prime is 491653. The next prime is 491669. The reversal of 491654 is 456194.

It is a sphenic number, since it is the product of 3 distinct primes.

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 491654.

It is not an unprimeable number, because it can be changed into a prime (491651) 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, 167 + ... + 1005.

It is an arithmetic number, because the mean of its divisors is an integer number (92610).

2⁴⁹¹⁶⁵⁴ is an apocalyptic number.

491654 is a deficient number, since it is larger than the sum of its proper divisors (249226).

491654 is a wasteful number, since it uses less digits than its factorization.

491654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134.

The product of its digits is 4320, while the sum is 29.

The square root of 491654 is about 701.1804332695. The cubic root of 491654 is about 78.9259574374.

The spelling of 491654 in words is "four hundred ninety-one thousand, six hundred fifty-four".