722315247 has 16 divisors (see below), whose sum is σ = 991415040. Its totient is φ = 467514432.

The previous prime is 722315239. The next prime is 722315257. The reversal of 722315247 is 742513227.

It is not a de Polignac number, because 722315247 - 2³ = 722315239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722315257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4779 + ... + 38307.

It is an arithmetic number, because the mean of its divisors is an integer number (61963440).

Almost surely, 2^722315247 is an apocalyptic number.

722315247 is a deficient number, since it is larger than the sum of its proper divisors (269099793).

722315247 is a wasteful number, since it uses less digits than its factorization.

722315247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33742.

The product of its digits is 23520, while the sum is 33.

The square root of 722315247 is about 26875.9231841438. The cubic root of 722315247 is about 897.2406212959.

The spelling of 722315247 in words is "seven hundred twenty-two million, three hundred fifteen thousand, two hundred forty-seven".