722996964 has 72 divisors (see below), whose sum is σ = 1871297792. Its totient is φ = 235301760.

The previous prime is 722996959. The next prime is 722996971. The reversal of 722996964 is 469699227.

It is a self number, because there is not a number n which added to its sum of digits gives 722996964.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 269349 + ... + 272019.

Almost surely, 2^722996964 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 722996964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (935648896).

722996964 is an abundant number, since it is smaller than the sum of its proper divisors (1148300828).

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

722996964 is a wasteful number, since it uses less digits than its factorization.

722996964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857 (or 2852 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The square root of 722996964 is about 26888.6028644108. The cubic root of 722996964 is about 897.5228027302.

The spelling of 722996964 in words is "seven hundred twenty-two million, nine hundred ninety-six thousand, nine hundred sixty-four".