22686213 has 8 divisors (see below), whose sum is σ = 32998176. Its totient is φ = 13749200.

The previous prime is 22686197. The next prime is 22686227. The reversal of 22686213 is 31268622.

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 22686213 - 2⁴ = 22686197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22686253) 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, 343698 + ... + 343763.

It is an arithmetic number, because the mean of its divisors is an integer number (4124772).

Almost surely, 2^22686213 is an apocalyptic number.

It is an amenable number.

22686213 is a deficient number, since it is larger than the sum of its proper divisors (10311963).

22686213 is a wasteful number, since it uses less digits than its factorization.

22686213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687475.

The product of its digits is 6912, while the sum is 30.

The square root of 22686213 is about 4763.0046189354. The cubic root of 22686213 is about 283.0874839306.

The spelling of 22686213 in words is "twenty-two million, six hundred eighty-six thousand, two hundred thirteen".