722546849 has 2 divisors, whose sum is σ = 722546850. Its totient is φ = 722546848.

The previous prime is 722546843. The next prime is 722546857. The reversal of 722546849 is 948645227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 704637025 + 17909824 = 26545^2 + 4232^2 .

It is a cyclic number.

It is not a de Polignac number, because 722546849 - 2⁴ = 722546833 is a prime.

It is not a weakly prime, because it can be changed into another prime (722546843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361273424 + 361273425.

It is an arithmetic number, because the mean of its divisors is an integer number (361273425).

Almost surely, 2^722546849 is an apocalyptic number.

It is an amenable number.

722546849 is a deficient number, since it is larger than the sum of its proper divisors (1).

722546849 is an equidigital number, since it uses as much as digits as its factorization.

722546849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 47.

The square root of 722546849 is about 26880.2315652228. The cubic root of 722546849 is about 897.3365076454.

The spelling of 722546849 in words is "seven hundred twenty-two million, five hundred forty-six thousand, eight hundred forty-nine".