22660013 has 4 divisors (see below), whose sum is σ = 22675260. Its totient is φ = 22644768.

The previous prime is 22659983. The next prime is 22660019. The reversal of 22660013 is 31006622.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18003049 + 4656964 = 4243^2 + 2158^2 .

It is a cyclic number.

It is not a de Polignac number, because 22660013 - 2¹⁰ = 22658989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22660019) 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, 5120 + ... + 8457.

It is an arithmetic number, because the mean of its divisors is an integer number (5668815).

Almost surely, 2^22660013 is an apocalyptic number.

It is an amenable number.

22660013 is a deficient number, since it is larger than the sum of its proper divisors (15247).

22660013 is a wasteful number, since it uses less digits than its factorization.

22660013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15246.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 22660013 is about 4760.2534596385. The cubic root of 22660013 is about 282.9784639848.

Adding to 22660013 its reverse (31006622), we get a palindrome (53666635).

The spelling of 22660013 in words is "twenty-two million, six hundred sixty thousand, thirteen".