722849 has 2 divisors, whose sum is σ = 722850. Its totient is φ = 722848.

The previous prime is 722833. The next prime is 722881. The reversal of 722849 is 948227.

It is an a-pointer prime, because the next prime (722881) can be obtained adding 722849 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 692224 + 30625 = 832^2 + 175^2 .

It is a cyclic number.

It is not a de Polignac number, because 722849 - 2⁴ = 722833 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (722819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361424 + 361425.

It is an arithmetic number, because the mean of its divisors is an integer number (361425).

2⁷²²⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

722849 is a deficient number, since it is larger than the sum of its proper divisors (1).

722849 is an equidigital number, since it uses as much as digits as its factorization.

722849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 32.

The square root of 722849 is about 850.2052693321. The cubic root of 722849 is about 89.7461571434.

The spelling of 722849 in words is "seven hundred twenty-two thousand, eight hundred forty-nine".