722306087 has 2 divisors, whose sum is σ = 722306088. Its totient is φ = 722306086.

The previous prime is 722306083. The next prime is 722306141. The reversal of 722306087 is 780603227.

It is a weak prime.

It is an emirp because it is prime and its reverse (780603227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 722306087 - 2² = 722306083 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 (722306083) 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, 361153043 + 361153044.

It is an arithmetic number, because the mean of its divisors is an integer number (361153044).

Almost surely, 2^722306087 is an apocalyptic number.

722306087 is a deficient number, since it is larger than the sum of its proper divisors (1).

722306087 is an equidigital number, since it uses as much as digits as its factorization.

722306087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 722306087 is about 26875.7527708528. The cubic root of 722306087 is about 897.2368285112.

The spelling of 722306087 in words is "seven hundred twenty-two million, three hundred six thousand, eighty-seven".