1226708663 has 2 divisors, whose sum is σ = 1226708664. Its totient is φ = 1226708662.

The previous prime is 1226708629. The next prime is 1226708701. The reversal of 1226708663 is 3668076221.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (3668076221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1226708663 - 2⁸ = 1226708407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1226708663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1226708363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613354331 + 613354332.

It is an arithmetic number, because the mean of its divisors is an integer number (613354332).

Almost surely, 2^1226708663 is an apocalyptic number.

1226708663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226708663 is an equidigital number, since it uses as much as digits as its factorization.

1226708663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 1226708663 is about 35024.4009656125. The cubic root of 1226708663 is about 1070.4847318975.

The spelling of 1226708663 in words is "one billion, two hundred twenty-six million, seven hundred eight thousand, six hundred sixty-three".