1666094 has 4 divisors (see below), whose sum is σ = 2499144. Its totient is φ = 833046.

The previous prime is 1666081. The next prime is 1666111. The reversal of 1666094 is 4906661.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1666094.

It is a congruent number.

It is an unprimeable number.

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, 416522 + ... + 416525.

It is an arithmetic number, because the mean of its divisors is an integer number (624786).

2^1666094 is an apocalyptic number.

1666094 is a deficient number, since it is larger than the sum of its proper divisors (833050).

1666094 is an equidigital number, since it uses as much as digits as its factorization.

1666094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833049.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 1666094 is about 1290.7726368342. The cubic root of 1666094 is about 118.5495291659.

The spelling of 1666094 in words is "one million, six hundred sixty-six thousand, ninety-four".