722848639 has 2 divisors, whose sum is σ = 722848640. Its totient is φ = 722848638.

The previous prime is 722848591. The next prime is 722848661. The reversal of 722848639 is 936848227.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 722848639 - 2²¹ = 720751487 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 722848592 and 722848601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722848039) 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 as a sum of consecutive naturals, namely, 361424319 + 361424320.

It is an arithmetic number, because the mean of its divisors is an integer number (361424320).

Almost surely, 2^722848639 is an apocalyptic number.

722848639 is a deficient number, since it is larger than the sum of its proper divisors (1).

722848639 is an equidigital number, since it uses as much as digits as its factorization.

722848639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 49.

The square root of 722848639 is about 26885.8445840929. The cubic root of 722848639 is about 897.4614220324.

The spelling of 722848639 in words is "seven hundred twenty-two million, eight hundred forty-eight thousand, six hundred thirty-nine".