12322661 has 8 divisors (see below), whose sum is σ = 13346424. Its totient is φ = 11309760.

The previous prime is 12322649. The next prime is 12322691. The reversal of 12322661 is 16622321.

12322661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 37636 + 12285025 = 194^2 + 3505^2 .

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 12322661 - 2¹⁰ = 12321637 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12322631) 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, 266 + ... + 4971.

It is an arithmetic number, because the mean of its divisors is an integer number (1668303).

Almost surely, 2^12322661 is an apocalyptic number.

It is an amenable number.

12322661 is a deficient number, since it is larger than the sum of its proper divisors (1023763).

12322661 is a wasteful number, since it uses less digits than its factorization.

12322661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5431.

The product of its digits is 864, while the sum is 23.

The square root of 12322661 is about 3510.3647958581. The cubic root of 12322661 is about 230.9766972364.

Adding to 12322661 its reverse (16622321), we get a palindrome (28944982).

The spelling of 12322661 in words is "twelve million, three hundred twenty-two thousand, six hundred sixty-one".