1666794 has 16 divisors (see below), whose sum is σ = 3509280. Its totient is φ = 526320.

The previous prime is 1666793. The next prime is 1666807. The reversal of 1666794 is 4976661.

It is not an unprimeable number, because it can be changed into a prime (1666793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7197 + ... + 7424.

It is an arithmetic number, because the mean of its divisors is an integer number (219330).

2^1666794 is an apocalyptic number.

1666794 is an abundant number, since it is smaller than the sum of its proper divisors (1842486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1666794 is a wasteful number, since it uses less digits than its factorization.

1666794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14645.

The product of its digits is 54432, while the sum is 39.

The square root of 1666794 is about 1291.0437637818. The cubic root of 1666794 is about 118.5661294800.

It can be divided in two parts, 16667 and 94, that added together give a palindrome (16761).

The spelling of 1666794 in words is "one million, six hundred sixty-six thousand, seven hundred ninety-four".