653704 has 16 divisors (see below), whose sum is σ = 1256220. Its totient is φ = 318720.

The previous prime is 653693. The next prime is 653707. The reversal of 653704 is 407356.

653704 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 636804 + 16900 = 798^2 + 130^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653707) by changing a digit.

653704 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 669 + ... + 1324.

2⁶⁵³⁷⁰⁴ is an apocalyptic number.

It is an amenable number.

653704 is a deficient number, since it is larger than the sum of its proper divisors (602516).

653704 is a wasteful number, since it uses less digits than its factorization.

653704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040 (or 2036 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 653704 is about 808.5196348884. The cubic root of 653704 is about 86.7881399838.

The spelling of 653704 in words is "six hundred fifty-three thousand, seven hundred four".