722643332 has 48 divisors (see below), whose sum is σ = 1316165760. Its totient is φ = 347001600.

The previous prime is 722643331. The next prime is 722643349. The reversal of 722643332 is 233346227.

It is not an unprimeable number, because it can be changed into a prime (722643331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2323457 + ... + 2323767.

It is an arithmetic number, because the mean of its divisors is an integer number (27420120).

Almost surely, 2^722643332 is an apocalyptic number.

It is an amenable number.

722643332 is a deficient number, since it is larger than the sum of its proper divisors (593522428).

722643332 is a wasteful number, since it uses less digits than its factorization.

722643332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572 (or 570 counting only the distinct ones).

The product of its digits is 36288, while the sum is 32.

The square root of 722643332 is about 26882.0261885149. The cubic root of 722643332 is about 897.3764468618.

Adding to 722643332 its reverse (233346227), we get a palindrome (955989559).

The spelling of 722643332 in words is "seven hundred twenty-two million, six hundred forty-three thousand, three hundred thirty-two".