653654432 has 48 divisors (see below), whose sum is σ = 1367309160. Its totient is φ = 307012608.

The previous prime is 653654429. The next prime is 653654447. The reversal of 653654432 is 234456356.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 498003856 + 155650576 = 22316^2 + 12476^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24818 + ... + 43854.

Almost surely, 2^653654432 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 653654432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (683654580).

653654432 is an abundant number, since it is smaller than the sum of its proper divisors (713654728).

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

653654432 is a wasteful number, since it uses less digits than its factorization.

653654432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19113 (or 19105 counting only the distinct ones).

The product of its digits is 259200, while the sum is 38.

The square root of 653654432 is about 25566.6664232942. Note that the first 3 decimals coincide. The cubic root of 653654432 is about 867.8594631851.

The spelling of 653654432 in words is "six hundred fifty-three million, six hundred fifty-four thousand, four hundred thirty-two".