1966023 has 6 divisors (see below), whose sum is σ = 2839824. Its totient is φ = 1310676.

The previous prime is 1966009. The next prime is 1966031. The reversal of 1966023 is 3206691.

It is a happy number.

It is not a de Polignac number, because 1966023 - 2⁴ = 1966007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 109215 + ... + 109232.

It is an arithmetic number, because the mean of its divisors is an integer number (473304).

2^1966023 is an apocalyptic number.

1966023 is a deficient number, since it is larger than the sum of its proper divisors (873801).

1966023 is a wasteful number, since it uses less digits than its factorization.

1966023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218453 (or 218450 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 1966023 is about 1402.1494214241. The cubic root of 1966023 is about 125.2745538533.

It can be divided in two parts, 19660 and 23, that added together give a 9-th power (19683 = 3⁹).

The spelling of 1966023 in words is "one million, nine hundred sixty-six thousand, twenty-three".