654944 has 24 divisors (see below), whose sum is σ = 1308888. Its totient is φ = 322560.

The previous prime is 654943. The next prime is 654967. The reversal of 654944 is 449456.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 654944.

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 654944.

It is not an unprimeable number, because it can be changed into a prime (654943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2999 + ... + 3209.

It is an arithmetic number, because the mean of its divisors is an integer number (54537).

2⁶⁵⁴⁹⁴⁴ is an apocalyptic number.

It is an amenable number.

654944 is a deficient number, since it is larger than the sum of its proper divisors (653944).

654944 is a wasteful number, since it uses less digits than its factorization.

654944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318 (or 310 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 654944 is about 809.2861051569. The cubic root of 654944 is about 86.8429809716.

The spelling of 654944 in words is "six hundred fifty-four thousand, nine hundred forty-four".