1266223 has 8 divisors (see below), whose sum is σ = 1474848. Its totient is φ = 1064544.

The previous prime is 1266197. The next prime is 1266229. The reversal of 1266223 is 3226621.

It is a happy number.

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 1266223 - 2⁵ = 1266191 is a prime.

It is an Ulam number.

It is a Duffinian number.

1266223 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1266194 and 1266203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266229) 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 in 7 ways as a sum of consecutive naturals, for example, 1336 + ... + 2077.

It is an arithmetic number, because the mean of its divisors is an integer number (184356).

2^1266223 is an apocalyptic number.

1266223 is a deficient number, since it is larger than the sum of its proper divisors (208625).

1266223 is an equidigital number, since it uses as much as digits as its factorization.

1266223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3473.

The product of its digits is 864, while the sum is 22.

The square root of 1266223 is about 1125.2657463906. The cubic root of 1266223 is about 108.1857514410.

The spelling of 1266223 in words is "one million, two hundred sixty-six thousand, two hundred twenty-three".