1217963 has 2 divisors, whose sum is σ = 1217964. Its totient is φ = 1217962.

The previous prime is 1217947. The next prime is 1217977. The reversal of 1217963 is 3697121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1217963 - 2⁴ = 1217947 is a prime.

It is not a weakly prime, because it can be changed into another prime (1217903) 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 as a sum of consecutive naturals, namely, 608981 + 608982.

It is an arithmetic number, because the mean of its divisors is an integer number (608982).

2^1217963 is an apocalyptic number.

1217963 is a deficient number, since it is larger than the sum of its proper divisors (1).

1217963 is an equidigital number, since it uses as much as digits as its factorization.

1217963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268, while the sum is 29.

The square root of 1217963 is about 1103.6136099197. The cubic root of 1217963 is about 106.7934700754.

The spelling of 1217963 in words is "one million, two hundred seventeen thousand, nine hundred sixty-three".