722426647 has 2 divisors, whose sum is σ = 722426648. Its totient is φ = 722426646.

The previous prime is 722426597. The next prime is 722426689. The reversal of 722426647 is 746624227.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 722426647 - 2¹⁵ = 722393879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722406647) 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, 361213323 + 361213324.

It is an arithmetic number, because the mean of its divisors is an integer number (361213324).

Almost surely, 2^722426647 is an apocalyptic number.

722426647 is a deficient number, since it is larger than the sum of its proper divisors (1).

722426647 is an equidigital number, since it uses as much as digits as its factorization.

722426647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 40.

The square root of 722426647 is about 26877.9955911895. The cubic root of 722426647 is about 897.2867449553.

The spelling of 722426647 in words is "seven hundred twenty-two million, four hundred twenty-six thousand, six hundred forty-seven".