722698536 has 128 divisors (see below), whose sum is σ = 2145484800. Its totient is φ = 198512640.

The previous prime is 722698523. The next prime is 722698547. The reversal of 722698536 is 635896227.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1004785 + ... + 1005503.

It is an arithmetic number, because the mean of its divisors is an integer number (16761600).

Almost surely, 2^722698536 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 722698536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1072742400).

722698536 is an abundant number, since it is smaller than the sum of its proper divisors (1422786264).

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

722698536 is a wasteful number, since it uses less digits than its factorization.

722698536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959 (or 955 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 48.

The square root of 722698536 is about 26883.0529516274. The cubic root of 722698536 is about 897.3992970036.

The spelling of 722698536 in words is "seven hundred twenty-two million, six hundred ninety-eight thousand, five hundred thirty-six".