722953381 has 2 divisors, whose sum is σ = 722953382. Its totient is φ = 722953380.

The previous prime is 722953351. The next prime is 722953391. The reversal of 722953381 is 183359227.

722953381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 564822756 + 158130625 = 23766^2 + 12575^2 .

It is an emirp because it is prime and its reverse (183359227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 722953381 - 2²⁹ = 186082469 is a prime.

It is a super-2 number, since 2×722953381² = 1045323182198662322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722953351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361476690 + 361476691.

It is an arithmetic number, because the mean of its divisors is an integer number (361476691).

Almost surely, 2^722953381 is an apocalyptic number.

It is an amenable number.

722953381 is a deficient number, since it is larger than the sum of its proper divisors (1).

722953381 is an equidigital number, since it uses as much as digits as its factorization.

722953381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 40.

The square root of 722953381 is about 26887.7924158902. The cubic root of 722953381 is about 897.5047678355.

The spelling of 722953381 in words is "seven hundred twenty-two million, nine hundred fifty-three thousand, three hundred eighty-one".