722280791 has 2 divisors, whose sum is σ = 722280792. Its totient is φ = 722280790.

The previous prime is 722280781. The next prime is 722280817. The reversal of 722280791 is 197082227.

It is a weak prime.

It is an emirp because it is prime and its reverse (197082227) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-722280791 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722280781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361140395 + 361140396.

It is an arithmetic number, because the mean of its divisors is an integer number (361140396).

Almost surely, 2^722280791 is an apocalyptic number.

722280791 is a deficient number, since it is larger than the sum of its proper divisors (1).

722280791 is an equidigital number, since it uses as much as digits as its factorization.

722280791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 722280791 is about 26875.2821566584. The cubic root of 722280791 is about 897.2263542961.

The spelling of 722280791 in words is "seven hundred twenty-two million, two hundred eighty thousand, seven hundred ninety-one".