722662643 has 2 divisors, whose sum is σ = 722662644. Its totient is φ = 722662642.

The previous prime is 722662631. The next prime is 722662667. The reversal of 722662643 is 346266227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 722662643 - 2⁸ = 722662387 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 722662597 and 722662606.

It is not a weakly prime, because it can be changed into another prime (722622643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361331321 + 361331322.

It is an arithmetic number, because the mean of its divisors is an integer number (361331322).

Almost surely, 2^722662643 is an apocalyptic number.

722662643 is a deficient number, since it is larger than the sum of its proper divisors (1).

722662643 is an equidigital number, since it uses as much as digits as its factorization.

722662643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 38.

The square root of 722662643 is about 26882.3853666299. The cubic root of 722662643 is about 897.3844402390.

The spelling of 722662643 in words is "seven hundred twenty-two million, six hundred sixty-two thousand, six hundred forty-three".