1966863 has 16 divisors (see below), whose sum is σ = 2731520. Its totient is φ = 1257984.

The previous prime is 1966847. The next prime is 1966871. The reversal of 1966863 is 3686691.

It is a happy number.

It is not a de Polignac number, because 1966863 - 2⁴ = 1966847 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10095 + ... + 10287.

It is an arithmetic number, because the mean of its divisors is an integer number (170720).

2^1966863 is an apocalyptic number.

1966863 is a deficient number, since it is larger than the sum of its proper divisors (764657).

1966863 is a wasteful number, since it uses less digits than its factorization.

1966863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318.

The product of its digits is 46656, while the sum is 39.

The square root of 1966863 is about 1402.4489295514. The cubic root of 1966863 is about 125.2923928514.

The spelling of 1966863 in words is "one million, nine hundred sixty-six thousand, eight hundred sixty-three".