1966672 has 20 divisors (see below), whose sum is σ = 3851316. Its totient is φ = 972800.

The previous prime is 1966669. The next prime is 1966681. The reversal of 1966672 is 2766691.

It can be written as a sum of positive squares in 2 ways, for example, as 1382976 + 583696 = 1176^2 + 764^2 .

It is a congruent number.

It is an unprimeable number.

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, 1008 + ... + 2224.

2^1966672 is an apocalyptic number.

It is an amenable number.

1966672 is a deficient number, since it is larger than the sum of its proper divisors (1884644).

1966672 is a wasteful number, since it uses less digits than its factorization.

1966672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326 (or 1320 counting only the distinct ones).

The product of its digits is 27216, while the sum is 37.

The square root of 1966672 is about 1402.3808327270. The cubic root of 1966672 is about 125.2883370492.

The spelling of 1966672 in words is "one million, nine hundred sixty-six thousand, six hundred seventy-two".