22661347 has 4 divisors (see below), whose sum is σ = 22758840. Its totient is φ = 22563856.

The previous prime is 22661333. The next prime is 22661363. The reversal of 22661347 is 74316622.

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

It is a cyclic number.

It is not a de Polignac number, because 22661347 - 2¹⁵ = 22628579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22661047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48397 + ... + 48862.

It is an arithmetic number, because the mean of its divisors is an integer number (5689710).

Almost surely, 2^22661347 is an apocalyptic number.

22661347 is a deficient number, since it is larger than the sum of its proper divisors (97493).

22661347 is an equidigital number, since it uses as much as digits as its factorization.

22661347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97492.

The product of its digits is 12096, while the sum is 31.

The square root of 22661347 is about 4760.3935761657. The cubic root of 22661347 is about 282.9840168776.

Adding to 22661347 its reverse (74316622), we get a palindrome (96977969).

The spelling of 22661347 in words is "twenty-two million, six hundred sixty-one thousand, three hundred forty-seven".