722512164 has 96 divisors (see below), whose sum is σ = 1998581760. Its totient is φ = 200707200.

The previous prime is 722512159. The next prime is 722512213. The reversal of 722512164 is 461215227.

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, 73102 + ... + 82394.

It is an arithmetic number, because the mean of its divisors is an integer number (20818560).

Almost surely, 2^722512164 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 722512164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (999290880).

722512164 is an abundant number, since it is smaller than the sum of its proper divisors (1276069596).

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

722512164 is a wasteful number, since it uses less digits than its factorization.

722512164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9361 (or 9359 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 722512164 is about 26879.5863807463. The cubic root of 722512164 is about 897.3221488925.

The spelling of 722512164 in words is "seven hundred twenty-two million, five hundred twelve thousand, one hundred sixty-four".