22066313 has 4 divisors (see below), whose sum is σ = 22077588. Its totient is φ = 22055040.

The previous prime is 22066259. The next prime is 22066321. The reversal of 22066313 is 31366022.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 7382089 + 14684224 = 2717^2 + 3832^2 .

It is a cyclic number.

It is not a de Polignac number, because 22066313 - 2¹² = 22062217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22066333) 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, 1856 + ... + 6897.

It is an arithmetic number, because the mean of its divisors is an integer number (5519397).

Almost surely, 2^22066313 is an apocalyptic number.

It is an amenable number.

22066313 is a deficient number, since it is larger than the sum of its proper divisors (11275).

22066313 is an equidigital number, since it uses as much as digits as its factorization.

22066313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11274.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 22066313 is about 4697.4794305031. The cubic root of 22066313 is about 280.4851834493.

The spelling of 22066313 in words is "twenty-two million, sixty-six thousand, three hundred thirteen".