1665085 has 8 divisors (see below), whose sum is σ = 2085120. Its totient is φ = 1274064.

The previous prime is 1665073. The next prime is 1665091. The reversal of 1665085 is 5805661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1665085 - 2¹⁵ = 1632317 is a prime.

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 in 7 ways as a sum of consecutive naturals, for example, 7125 + ... + 7354.

It is an arithmetic number, because the mean of its divisors is an integer number (260640).

2^1665085 is an apocalyptic number.

It is an amenable number.

1665085 is a deficient number, since it is larger than the sum of its proper divisors (420035).

1665085 is a wasteful number, since it uses less digits than its factorization.

1665085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14507.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 1665085 is about 1290.3817264670. The cubic root of 1665085 is about 118.5255928153.

The spelling of 1665085 in words is "one million, six hundred sixty-five thousand, eighty-five".