6561422 has 32 divisors (see below), whose sum is σ = 12545280. Its totient is φ = 2505600.

The previous prime is 6561383. The next prime is 6561427. The reversal of 6561422 is 2241656.

It is a junction number, because it is equal to n+sod(n) for n = 6561391 and 6561400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6561427) 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 in 15 ways as a sum of consecutive naturals, for example, 3797 + ... + 5247.

It is an arithmetic number, because the mean of its divisors is an integer number (392040).

Almost surely, 2^6561422 is an apocalyptic number.

6561422 is a deficient number, since it is larger than the sum of its proper divisors (5983858).

6561422 is a wasteful number, since it uses less digits than its factorization.

6561422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496.

The product of its digits is 2880, while the sum is 26.

The square root of 6561422 is about 2561.5272787929. The cubic root of 6561422 is about 187.2115576849.

The spelling of 6561422 in words is "six million, five hundred sixty-one thousand, four hundred twenty-two".