722046816 has 144 divisors (see below), whose sum is σ = 2180505600. Its totient is φ = 226001664.

The previous prime is 722046811. The next prime is 722046827. The reversal of 722046816 is 618640227.

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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722046811) 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 23 ways as a sum of consecutive naturals, for example, 694425 + ... + 695463.

It is an arithmetic number, because the mean of its divisors is an integer number (15142400).

Almost surely, 2^722046816 is an apocalyptic number.

722046816 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722046816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1090252800).

722046816 is an abundant number, since it is smaller than the sum of its proper divisors (1458458784).

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

722046816 is a wasteful number, since it uses less digits than its factorization.

722046816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201 (or 1190 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 722046816 is about 26870.9288265218. The cubic root of 722046816 is about 897.1294615960.

The spelling of 722046816 in words is "seven hundred twenty-two million, forty-six thousand, eight hundred sixteen".