1966963 has 2 divisors, whose sum is σ = 1966964. Its totient is φ = 1966962.

The previous prime is 1966933. The next prime is 1966967. The reversal of 1966963 is 3696691.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1966963 - 2⁵ = 1966931 is a prime.

It is a plaindrome in base 11.

It is not a weakly prime, because it can be changed into another prime (1966967) 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, 983481 + 983482.

It is an arithmetic number, because the mean of its divisors is an integer number (983482).

2^1966963 is an apocalyptic number.

1966963 is a deficient number, since it is larger than the sum of its proper divisors (1).

1966963 is an equidigital number, since it uses as much as digits as its factorization.

1966963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52488, while the sum is 40.

The square root of 1966963 is about 1402.4845810204. The cubic root of 1966963 is about 125.2945162033.

The spelling of 1966963 in words is "one million, nine hundred sixty-six thousand, nine hundred sixty-three".