653432944 has 80 divisors (see below), whose sum is σ = 1410177600. Its totient is φ = 291737600.

The previous prime is 653432917. The next prime is 653433007. The reversal of 653432944 is 449234356.

It is a super-2 number, since 2×653432944² = 853949224609014272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 653432897 and 653432906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 931794 + ... + 932494.

It is an arithmetic number, because the mean of its divisors is an integer number (17627220).

Almost surely, 2^653432944 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 653432944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (705088800).

653432944 is an abundant number, since it is smaller than the sum of its proper divisors (756744656).

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

653432944 is a wasteful number, since it uses less digits than its factorization.

653432944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898 (or 892 counting only the distinct ones).

The product of its digits is 311040, while the sum is 40.

The square root of 653432944 is about 25562.3344786817. The cubic root of 653432944 is about 867.7614286261.

The spelling of 653432944 in words is "six hundred fifty-three million, four hundred thirty-two thousand, nine hundred forty-four".