22660361 has 2 divisors, whose sum is σ = 22660362. Its totient is φ = 22660360.

The previous prime is 22660357. The next prime is 22660373. The reversal of 22660361 is 16306622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16687225 + 5973136 = 4085^2 + 2444^2 .

It is a cyclic number.

It is not a de Polignac number, because 22660361 - 2² = 22660357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22660361.

It is not a weakly prime, because it can be changed into another prime (22660301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11330180 + 11330181.

It is an arithmetic number, because the mean of its divisors is an integer number (11330181).

Almost surely, 2^22660361 is an apocalyptic number.

It is an amenable number.

22660361 is a deficient number, since it is larger than the sum of its proper divisors (1).

22660361 is an equidigital number, since it uses as much as digits as its factorization.

22660361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 22660361 is about 4760.2900121736. The cubic root of 22660361 is about 282.9799125866.

Adding to 22660361 its reverse (16306622), we get a palindrome (38966983).

The spelling of 22660361 in words is "twenty-two million, six hundred sixty thousand, three hundred sixty-one".