722443680 has 144 divisors (see below), whose sum is σ = 2817569664. Its totient is φ = 165127680.

The previous prime is 722443663. The next prime is 722443693. The reversal of 722443680 is 86344227.

722443680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25756 + ... + 45915.

It is an arithmetic number, because the mean of its divisors is an integer number (19566456).

Almost surely, 2^722443680 is an apocalyptic number.

722443680 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

722443680 is an abundant number, since it is smaller than the sum of its proper divisors (2095125984).

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

722443680 is a wasteful number, since it uses less digits than its factorization.

722443680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71699 (or 71688 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 722443680 is about 26878.3124470269. The cubic root of 722443680 is about 897.2937968200.

The spelling of 722443680 in words is "seven hundred twenty-two million, four hundred forty-three thousand, six hundred eighty".