722751736 has 32 divisors (see below), whose sum is σ = 1639859040. Its totient is φ = 291529728.

The previous prime is 722751727. The next prime is 722751737. The reversal of 722751736 is 637157227.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722751737) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 378645 + ... + 380548.

It is an arithmetic number, because the mean of its divisors is an integer number (51245595).

Almost surely, 2^722751736 is an apocalyptic number.

It is an amenable number.

722751736 is an abundant number, since it is smaller than the sum of its proper divisors (917107304).

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

722751736 is a wasteful number, since it uses less digits than its factorization.

722751736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759223 (or 759219 counting only the distinct ones).

The product of its digits is 123480, while the sum is 40.

The square root of 722751736 is about 26884.0424043707. The cubic root of 722751736 is about 897.4213165451.

The spelling of 722751736 in words is "seven hundred twenty-two million, seven hundred fifty-one thousand, seven hundred thirty-six".