6622565 has 4 divisors (see below), whose sum is σ = 7947084. Its totient is φ = 5298048.

The previous prime is 6622547. The next prime is 6622601. The reversal of 6622565 is 5652266.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3407716 + 3214849 = 1846^2 + 1793^2 .

It is a cyclic number.

It is not a de Polignac number, because 6622565 - 2⁶ = 6622501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 662252 + ... + 662261.

It is an arithmetic number, because the mean of its divisors is an integer number (1986771).

Almost surely, 2^6622565 is an apocalyptic number.

It is an amenable number.

6622565 is a deficient number, since it is larger than the sum of its proper divisors (1324519).

6622565 is a wasteful number, since it uses less digits than its factorization.

6622565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324518.

The product of its digits is 21600, while the sum is 32.

The square root of 6622565 is about 2573.4344755598. The cubic root of 6622565 is about 187.7912746881.

Subtracting from 6622565 its reverse (5652266), we obtain a cube (970299 = 99³).

The spelling of 6622565 in words is "six million, six hundred twenty-two thousand, five hundred sixty-five".