22056647 has 8 divisors (see below), whose sum is σ = 22915872. Its totient is φ = 21212800.

The previous prime is 22056637. The next prime is 22056649. The reversal of 22056647 is 74665022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22056647 - 2¹² = 22052551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22056649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 878 + ... + 6699.

It is an arithmetic number, because the mean of its divisors is an integer number (2864484).

Almost surely, 2^22056647 is an apocalyptic number.

22056647 is a deficient number, since it is larger than the sum of its proper divisors (859225).

22056647 is an equidigital number, since it uses as much as digits as its factorization.

22056647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7689.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 22056647 is about 4696.4504681727. The cubic root of 22056647 is about 280.4442225852. Note that the first 3 decimals are identical.

The spelling of 22056647 in words is "twenty-two million, fifty-six thousand, six hundred forty-seven".