10622809 has 2 divisors, whose sum is σ = 10622810. Its totient is φ = 10622808.

The previous prime is 10622779. The next prime is 10622837. The reversal of 10622809 is 90822601.

It is a happy number.

It is an a-pointer prime, because the next prime (10622837) can be obtained adding 10622809 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6734025 + 3888784 = 2595^2 + 1972^2 .

It is a cyclic number.

It is not a de Polignac number, because 10622809 - 2⁷ = 10622681 is a prime.

It is a super-2 number, since 2×10622809² = 225688142100962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10622869) 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, 5311404 + 5311405.

It is an arithmetic number, because the mean of its divisors is an integer number (5311405).

Almost surely, 2^10622809 is an apocalyptic number.

It is an amenable number.

10622809 is a deficient number, since it is larger than the sum of its proper divisors (1).

10622809 is an equidigital number, since it uses as much as digits as its factorization.

10622809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 10622809 is about 3259.2651012153. The cubic root of 10622809 is about 219.8263712690.

Subtracting from 10622809 its product of nonzero digits (1728), we obtain a square (10621081 = 3259²).

The spelling of 10622809 in words is "ten million, six hundred twenty-two thousand, eight hundred nine".