1966851 has 12 divisors (see below), whose sum is σ = 2876328. Its totient is φ = 1294944.

The previous prime is 1966847. The next prime is 1966871. The reversal of 1966851 is 1586691.

It is not a de Polignac number, because 1966851 - 2² = 1966847 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (1966831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 570 + ... + 2063.

It is an arithmetic number, because the mean of its divisors is an integer number (239694).

2^1966851 is an apocalyptic number.

1966851 is a deficient number, since it is larger than the sum of its proper divisors (909477).

1966851 is a wasteful number, since it uses less digits than its factorization.

1966851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2722 (or 2719 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 1966851 is about 1402.4446513143. Note that the first 3 decimals coincide. The cubic root of 1966851 is about 125.2921380443.

The spelling of 1966851 in words is "one million, nine hundred sixty-six thousand, eight hundred fifty-one".