722561447 has 2 divisors, whose sum is σ = 722561448. Its totient is φ = 722561446.

The previous prime is 722561407. The next prime is 722561461. The reversal of 722561447 is 744165227.

722561447 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 722561447 - 2⁶ = 722561383 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 722561447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722561407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361280723 + 361280724.

It is an arithmetic number, because the mean of its divisors is an integer number (361280724).

Almost surely, 2^722561447 is an apocalyptic number.

722561447 is a deficient number, since it is larger than the sum of its proper divisors (1).

722561447 is an equidigital number, since it uses as much as digits as its factorization.

722561447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94080, while the sum is 38.

The square root of 722561447 is about 26880.5031016906. The cubic root of 722561447 is about 897.3425507276.

The spelling of 722561447 in words is "seven hundred twenty-two million, five hundred sixty-one thousand, four hundred forty-seven".