653997256 has 24 divisors (see below), whose sum is σ = 1347857910. Its totient is φ = 297271040.

The previous prime is 653997221. The next prime is 653997269. The reversal of 653997256 is 652799356.

It can be written as a sum of positive squares in only one way, i.e., 530565156 + 123432100 = 23034^2 + 11110^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 336841 + ... + 338776.

Almost surely, 2^653997256 is an apocalyptic number.

It is an amenable number.

653997256 is an abundant number, since it is smaller than the sum of its proper divisors (693860654).

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

653997256 is a wasteful number, since it uses less digits than its factorization.

653997256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675645 (or 675630 counting only the distinct ones).

The product of its digits is 3061800, while the sum is 52.

The square root of 653997256 is about 25573.3700555871. The cubic root of 653997256 is about 868.0111595754.

The spelling of 653997256 in words is "six hundred fifty-three million, nine hundred ninety-seven thousand, two hundred fifty-six".