1326666223 has 2 divisors, whose sum is σ = 1326666224. Its totient is φ = 1326666222.

The previous prime is 1326666193. The next prime is 1326666259. The reversal of 1326666223 is 3226666231.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1326666223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1326666023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663333111 + 663333112.

It is an arithmetic number, because the mean of its divisors is an integer number (663333112).

Almost surely, 2^1326666223 is an apocalyptic number.

1326666223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1326666223 is an equidigital number, since it uses as much as digits as its factorization.

1326666223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 37.

The square root of 1326666223 is about 36423.4295886590. The cubic root of 1326666223 is about 1098.8048239217.

The spelling of 1326666223 in words is "one billion, three hundred twenty-six million, six hundred sixty-six thousand, two hundred twenty-three".