1966671 has 48 divisors (see below), whose sum is σ = 3594240. Its totient is φ = 1010880.

The previous prime is 1966669. The next prime is 1966681. The reversal of 1966671 is 1766691.

It is not a de Polignac number, because 1966671 - 2¹ = 1966669 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 37081 + ... + 37133.

It is an arithmetic number, because the mean of its divisors is an integer number (74880).

2^1966671 is an apocalyptic number.

1966671 is a deficient number, since it is larger than the sum of its proper divisors (1627569).

1966671 is a wasteful number, since it uses less digits than its factorization.

1966671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 113 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 1966671 is about 1402.3804761904. The cubic root of 1966671 is about 125.2883158140.

The spelling of 1966671 in words is "one million, nine hundred sixty-six thousand, six hundred seventy-one".