622849 has 2 divisors, whose sum is σ = 622850. Its totient is φ = 622848.

The previous prime is 622813. The next prime is 622861. The reversal of 622849 is 948226.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 535824 + 87025 = 732^2 + 295^2 .

It is a cyclic number.

It is not a de Polignac number, because 622849 - 2⁹ = 622337 is a prime.

It is a d-powerful number, because it can be written as 6³ + 2⁵ + 8⁵ + 2¹⁹ + 4⁸ + 9 .

It is a self number, because there is not a number n which added to its sum of digits gives 622849.

It is not a weakly prime, because it can be changed into another prime (622879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311424 + 311425.

It is an arithmetic number, because the mean of its divisors is an integer number (311425).

2⁶²²⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

622849 is a deficient number, since it is larger than the sum of its proper divisors (1).

622849 is an equidigital number, since it uses as much as digits as its factorization.

622849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 31.

The square root of 622849 is about 789.2078306758. The cubic root of 622849 is about 85.4006003757.

The spelling of 622849 in words is "six hundred twenty-two thousand, eight hundred forty-nine".