1224666 has 16 divisors (see below), whose sum is σ = 2721600. Its totient is φ = 408204.

The previous prime is 1224637. The next prime is 1224673. The reversal of 1224666 is 6664221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a plaindrome in base 10.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11286 + ... + 11393.

It is an arithmetic number, because the mean of its divisors is an integer number (170100).

2^1224666 is an apocalyptic number.

1224666 is an abundant number, since it is smaller than the sum of its proper divisors (1496934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1224666 is a wasteful number, since it uses less digits than its factorization.

1224666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22690 (or 22684 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 1224666 is about 1106.6462849529. The cubic root of 1224666 is about 106.9890226605.

Adding to 1224666 its reverse (6664221), we get a palindrome (7888887).

The spelling of 1224666 in words is "one million, two hundred twenty-four thousand, six hundred sixty-six".