1966273 has 4 divisors (see below), whose sum is σ = 1969108. Its totient is φ = 1963440.

The previous prime is 1966259. The next prime is 1966297. The reversal of 1966273 is 3726691.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 693889 + 1272384 = 833^2 + 1128^2 .

It is a cyclic number.

It is not a de Polignac number, because 1966273 - 2⁵ = 1966241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1966873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403 + ... + 2023.

It is an arithmetic number, because the mean of its divisors is an integer number (492277).

2^1966273 is an apocalyptic number.

It is an amenable number.

1966273 is a deficient number, since it is larger than the sum of its proper divisors (2835).

1966273 is a wasteful number, since it uses less digits than its factorization.

1966273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2834.

The product of its digits is 13608, while the sum is 34.

The square root of 1966273 is about 1402.2385674342. The cubic root of 1966273 is about 125.2798636099.

The spelling of 1966273 in words is "one million, nine hundred sixty-six thousand, two hundred seventy-three".