653797872 has 160 divisors (see below), whose sum is σ = 2309852160. Its totient is φ = 172419840.

The previous prime is 653797853. The next prime is 653797873. The reversal of 653797872 is 278797356.

653797872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653797873) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30997 + ... + 47627.

It is an arithmetic number, because the mean of its divisors is an integer number (14436576).

Almost surely, 2^653797872 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 653797872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1154926080).

653797872 is an abundant number, since it is smaller than the sum of its proper divisors (1656054288).

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

653797872 is a wasteful number, since it uses less digits than its factorization.

653797872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16668 (or 16656 counting only the distinct ones).

The product of its digits is 4445280, while the sum is 54.

The square root of 653797872 is about 25569.4714845653. The cubic root of 653797872 is about 867.9229404857.

The spelling of 653797872 in words is "six hundred fifty-three million, seven hundred ninety-seven thousand, eight hundred seventy-two".