653045900 has 72 divisors (see below), whose sum is σ = 1592543904. Its totient is φ = 230630400.

The previous prime is 653045891. The next prime is 653045917. The reversal of 653045900 is 9540356.

It is a happy number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18980 + ... + 40820.

Almost surely, 2^653045900 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 653045900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (796271952).

653045900 is an abundant number, since it is smaller than the sum of its proper divisors (939498004).

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

653045900 is a wasteful number, since it uses less digits than its factorization.

653045900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21891 (or 21884 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 653045900 is about 25554.7627654807. The cubic root of 653045900 is about 867.5900628201.

The spelling of 653045900 in words is "six hundred fifty-three million, forty-five thousand, nine hundred".