1966872 has 16 divisors (see below), whose sum is σ = 4917240. Its totient is φ = 655616.

The previous prime is 1966871. The next prime is 1966873. The reversal of 1966872 is 2786691.

It is an interprime number because it is at equal distance from previous prime (1966871) and next prime (1966873).

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1966872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966871) 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, 40953 + ... + 41000.

2^1966872 is an apocalyptic number.

1966872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1966872 is an abundant number, since it is smaller than the sum of its proper divisors (2950368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1966872 is a wasteful number, since it uses less digits than its factorization.

1966872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81962 (or 81958 counting only the distinct ones).

The product of its digits is 36288, while the sum is 39.

The square root of 1966872 is about 1402.4521382208. The cubic root of 1966872 is about 125.2925839560.

The spelling of 1966872 in words is "one million, nine hundred sixty-six thousand, eight hundred seventy-two".