722306887 has 2 divisors, whose sum is σ = 722306888. Its totient is φ = 722306886.

The previous prime is 722306813. The next prime is 722306891. The reversal of 722306887 is 788603227.

722306887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 722306887 - 2²³ = 713918279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722306807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361153443 + 361153444.

It is an arithmetic number, because the mean of its divisors is an integer number (361153444).

Almost surely, 2^722306887 is an apocalyptic number.

722306887 is a deficient number, since it is larger than the sum of its proper divisors (1).

722306887 is an equidigital number, since it uses as much as digits as its factorization.

722306887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 722306887 is about 26875.7676541527. The cubic root of 722306887 is about 897.2371597600.

The spelling of 722306887 in words is "seven hundred twenty-two million, three hundred six thousand, eight hundred eighty-seven".