722475641 has 2 divisors, whose sum is σ = 722475642. Its totient is φ = 722475640.

The previous prime is 722475631. The next prime is 722475647. The reversal of 722475641 is 146574227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 582739600 + 139736041 = 24140^2 + 11821^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-722475641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 722475595 and 722475604.

It is not a weakly prime, because it can be changed into another prime (722475647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361237820 + 361237821.

It is an arithmetic number, because the mean of its divisors is an integer number (361237821).

Almost surely, 2^722475641 is an apocalyptic number.

It is an amenable number.

722475641 is a deficient number, since it is larger than the sum of its proper divisors (1).

722475641 is an equidigital number, since it uses as much as digits as its factorization.

722475641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94080, while the sum is 38.

The square root of 722475641 is about 26878.9069904265. The cubic root of 722475641 is about 897.3070287554.

The spelling of 722475641 in words is "seven hundred twenty-two million, four hundred seventy-five thousand, six hundred forty-one".