653244 has 12 divisors (see below), whose sum is σ = 1524264. Its totient is φ = 217744.

The previous prime is 653243. The next prime is 653267. The reversal of 653244 is 442356.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27207 + ... + 27230.

It is an arithmetic number, because the mean of its divisors is an integer number (127022).

2⁶⁵³²⁴⁴ is an apocalyptic number.

It is an amenable number.

653244 is an abundant number, since it is smaller than the sum of its proper divisors (871020).

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

653244 is a wasteful number, since it uses less digits than its factorization.

653244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54444 (or 54442 counting only the distinct ones).

The product of its digits is 2880, while the sum is 24.

The square root of 653244 is about 808.2351143077. The cubic root of 653244 is about 86.7677781114.

The spelling of 653244 in words is "six hundred fifty-three thousand, two hundred forty-four".