653044 has 24 divisors (see below), whose sum is σ = 1326528. Its totient is φ = 275520.

The previous prime is 653033. The next prime is 653057. The reversal of 653044 is 440356.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2184 + ... + 2464.

It is an arithmetic number, because the mean of its divisors is an integer number (55272).

2⁶⁵³⁰⁴⁴ is an apocalyptic number.

It is an amenable number.

653044 is an abundant number, since it is smaller than the sum of its proper divisors (673484).

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

653044 is a wasteful number, since it uses less digits than its factorization.

653044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 653044 is about 808.1113784622. Note that the first 3 decimals coincide. The cubic root of 653044 is about 86.7589221418.

The spelling of 653044 in words is "six hundred fifty-three thousand, forty-four".