1966814 has 4 divisors (see below), whose sum is σ = 2950224. Its totient is φ = 983406.

The previous prime is 1966813. The next prime is 1966817. The reversal of 1966814 is 4186691.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966813) 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 as a sum of consecutive naturals, namely, 491702 + ... + 491705.

It is an arithmetic number, because the mean of its divisors is an integer number (737556).

2^1966814 is an apocalyptic number.

1966814 is a deficient number, since it is larger than the sum of its proper divisors (983410).

1966814 is an equidigital number, since it uses as much as digits as its factorization.

1966814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983409.

The product of its digits is 10368, while the sum is 35.

The square root of 1966814 is about 1402.4314600008. The cubic root of 1966814 is about 125.2913523827.

The spelling of 1966814 in words is "one million, nine hundred sixty-six thousand, eight hundred fourteen".