1966895 has 8 divisors (see below), whose sum is σ = 2697504. Its totient is φ = 1348704.

The previous prime is 1966889. The next prime is 1966897. The reversal of 1966895 is 5986691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1966895 - 2⁴ = 1966879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28064 + ... + 28133.

It is an arithmetic number, because the mean of its divisors is an integer number (337188).

2^1966895 is an apocalyptic number.

1966895 is a deficient number, since it is larger than the sum of its proper divisors (730609).

1966895 is an equidigital number, since it uses as much as digits as its factorization.

1966895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56209.

The product of its digits is 116640, while the sum is 44.

The square root of 1966895 is about 1402.4603381201. The cubic root of 1966895 is about 125.2930723319.

The spelling of 1966895 in words is "one million, nine hundred sixty-six thousand, eight hundred ninety-five".