653255740 has 96 divisors (see below), whose sum is σ = 1469664000. Its totient is φ = 243489792.

The previous prime is 653255731. The next prime is 653255741. The reversal of 653255740 is 47552356.

It is a self number, because there is not a number n which added to its sum of digits gives 653255740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653255741) 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, 2428326 + ... + 2428594.

It is an arithmetic number, because the mean of its divisors is an integer number (15309000).

Almost surely, 2^653255740 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 653255740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (734832000).

653255740 is an abundant number, since it is smaller than the sum of its proper divisors (816408260).

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

653255740 is a wasteful number, since it uses less digits than its factorization.

653255740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439 (or 437 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 37.

The square root of 653255740 is about 25558.8681283033. The cubic root of 653255740 is about 867.6829790060.

The spelling of 653255740 in words is "six hundred fifty-three million, two hundred fifty-five thousand, seven hundred forty".