22666686 has 32 divisors (see below), whose sum is σ = 53077248. Its totient is φ = 6317760.

The previous prime is 22666663. The next prime is 22666687. The reversal of 22666686 is 68666622.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22666687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4860 + ... + 8303.

It is an arithmetic number, because the mean of its divisors is an integer number (1658664).

Almost surely, 2^22666686 is an apocalyptic number.

22666686 is an abundant number, since it is smaller than the sum of its proper divisors (30410562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22666686 is a wasteful number, since it uses less digits than its factorization.

22666686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13216.

The product of its digits is 248832, while the sum is 42.

The square root of 22666686 is about 4760.9543161009. The cubic root of 22666686 is about 283.0062387550.

The spelling of 22666686 in words is "twenty-two million, six hundred sixty-six thousand, six hundred eighty-six".