1966684 has 12 divisors (see below), whose sum is σ = 3591504. Its totient is φ = 940544.

The previous prime is 1966681. The next prime is 1966697. The reversal of 1966684 is 4866691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10597 + ... + 10780.

It is an arithmetic number, because the mean of its divisors is an integer number (299292).

2^1966684 is an apocalyptic number.

It is an amenable number.

1966684 is a deficient number, since it is larger than the sum of its proper divisors (1624820).

1966684 is a wasteful number, since it uses less digits than its factorization.

1966684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21404 (or 21402 counting only the distinct ones).

The product of its digits is 62208, while the sum is 40.

The square root of 1966684 is about 1402.3851111588. The cubic root of 1966684 is about 125.2885918718.

The spelling of 1966684 in words is "one million, nine hundred sixty-six thousand, six hundred eighty-four".