722221567 has 2 divisors, whose sum is σ = 722221568. Its totient is φ = 722221566.

The previous prime is 722221529. The next prime is 722221583. The reversal of 722221567 is 765122227.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (765122227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 722221567 - 2¹⁹ = 721697279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722221967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361110783 + 361110784.

It is an arithmetic number, because the mean of its divisors is an integer number (361110784).

Almost surely, 2^722221567 is an apocalyptic number.

722221567 is a deficient number, since it is larger than the sum of its proper divisors (1).

722221567 is an equidigital number, since it uses as much as digits as its factorization.

722221567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23520, while the sum is 34.

The square root of 722221567 is about 26874.1803037786. The cubic root of 722221567 is about 897.2018306913.

The spelling of 722221567 in words is "seven hundred twenty-two million, two hundred twenty-one thousand, five hundred sixty-seven".