1666093 has 16 divisors (see below), whose sum is σ = 1999872.
Its totient is φ = 1368000.
The previous prime is 1666081. The next prime is 1666111. The reversal of 1666093 is 3906661.
It is a cyclic number.
It is not a de Polignac number, because 1666093 - 25 = 1666061 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 (1666003) 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 15 ways as a sum of consecutive naturals, for example, 8628 + ... + 8818.
It is an arithmetic number, because the mean of its divisors is an integer number (124992).
21666093 is an apocalyptic number.
1666093 is a gapful number since it is divisible by the number (13) formed by its first and last digit.
It is an amenable number.
1666093 is a deficient number, since it is larger than the sum of its proper divisors (333779).
1666093 is a wasteful number, since it uses less digits than its factorization.
1666093 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 276.
The product of its (nonzero) digits is 5832, while the sum is 31.
The square root of 1666093 is about 1290.7722494693.
The cubic root of 1666093 is about 118.5495054478.
The spelling of 1666093 in words is "one million, six hundred sixty-six thousand, ninety-three".