1226663 has 2 divisors, whose sum is σ = 1226664. Its totient is φ = 1226662.

The previous prime is 1226651. The next prime is 1226677. The reversal of 1226663 is 3666221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1226663 - 2¹² = 1222567 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1226623) by changing a digit.

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 as a sum of consecutive naturals, namely, 613331 + 613332.

It is an arithmetic number, because the mean of its divisors is an integer number (613332).

2^1226663 is an apocalyptic number.

1226663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226663 is an equidigital number, since it uses as much as digits as its factorization.

1226663 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1226663 is about 1107.5481930824. The cubic root of 1226663 is about 107.0471449159.

The spelling of 1226663 in words is "one million, two hundred twenty-six thousand, six hundred sixty-three".