1668085 has 16 divisors (see below), whose sum is σ = 2096640. Its totient is φ = 1272960.

The previous prime is 1668083. The next prime is 1668089. The reversal of 1668085 is 5808661.

1668085 = T₁₂₆ + T₁₂₇ + ... + T₂₂₈.

It is a happy number.

It is not a de Polignac number, because 1668085 - 2¹ = 1668083 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1668085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16144 + ... + 16246.

It is an arithmetic number, because the mean of its divisors is an integer number (131040).

2^1668085 is an apocalyptic number.

It is an amenable number.

1668085 is a deficient number, since it is larger than the sum of its proper divisors (428555).

1668085 is a wasteful number, since it uses less digits than its factorization.

1668085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 1668085 is about 1291.5436500560. The cubic root of 1668085 is about 118.5967330160.

Subtracting from 1668085 its sum of digits (34), we obtain a triangular number (1668051 = T₁₈₂₆).

The spelling of 1668085 in words is "one million, six hundred sixty-eight thousand, eighty-five".