22646645 has 8 divisors (see below), whose sum is σ = 31058304. Its totient is φ = 15529104.

The previous prime is 22646629. The next prime is 22646653. The reversal of 22646645 is 54664622.

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 22646645 - 2⁴ = 22646629 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 647047 = 22646645 / (2 + 2 + 6 + 4 + 6 + 6 + 4 + 5).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323489 + ... + 323558.

It is an arithmetic number, because the mean of its divisors is an integer number (3882288).

Almost surely, 2^22646645 is an apocalyptic number.

It is an amenable number.

22646645 is a deficient number, since it is larger than the sum of its proper divisors (8411659).

22646645 is an equidigital number, since it uses as much as digits as its factorization.

22646645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647059.

The product of its digits is 69120, while the sum is 35.

The square root of 22646645 is about 4758.8491255765. The cubic root of 22646645 is about 282.9228064670.

The spelling of 22646645 in words is "twenty-two million, six hundred forty-six thousand, six hundred forty-five".