1226566 has 16 divisors (see below), whose sum is σ = 2027520. Its totient is φ = 551880.

The previous prime is 1226557. The next prime is 1226581. The reversal of 1226566 is 6656221.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 2575 + ... + 3013.

It is an arithmetic number, because the mean of its divisors is an integer number (126720).

2^1226566 is an apocalyptic number.

1226566 is a deficient number, since it is larger than the sum of its proper divisors (800954).

1226566 is a wasteful number, since it uses less digits than its factorization.

1226566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579.

The product of its digits is 4320, while the sum is 28.

The square root of 1226566 is about 1107.5044017971. The cubic root of 1226566 is about 107.0443232100.

The spelling of 1226566 in words is "one million, two hundred twenty-six thousand, five hundred sixty-six".