22397566 has 8 divisors (see below), whose sum is σ = 33638040. Its totient is φ = 11184888.

The previous prime is 22397563. The next prime is 22397567. The reversal of 22397566 is 66579322.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22397563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4801 + ... + 8236.

It is an arithmetic number, because the mean of its divisors is an integer number (4204755).

Almost surely, 2^22397566 is an apocalyptic number.

22397566 is a deficient number, since it is larger than the sum of its proper divisors (11240474).

22397566 is a wasteful number, since it uses less digits than its factorization.

22397566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13898.

The product of its digits is 136080, while the sum is 40.

The square root of 22397566 is about 4732.6066813121. The cubic root of 22397566 is about 281.8817387192.

The spelling of 22397566 in words is "twenty-two million, three hundred ninety-seven thousand, five hundred sixty-six".