1622849 has 2 divisors, whose sum is σ = 1622850. Its totient is φ = 1622848.

The previous prime is 1622839. The next prime is 1622861. The reversal of 1622849 is 9482261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1254400 + 368449 = 1120^2 + 607^2 .

It is a cyclic number.

It is not a de Polignac number, because 1622849 - 2⁴ = 1622833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1622839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811424 + 811425.

It is an arithmetic number, because the mean of its divisors is an integer number (811425).

2^1622849 is an apocalyptic number.

It is an amenable number.

1622849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1622849 is an equidigital number, since it uses as much as digits as its factorization.

1622849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 32.

The square root of 1622849 is about 1273.9109074029. The cubic root of 1622849 is about 117.5148374201.

The spelling of 1622849 in words is "one million, six hundred twenty-two thousand, eight hundred forty-nine".