665086 has 8 divisors (see below), whose sum is σ = 1032120. Its totient is φ = 321048.

The previous prime is 665069. The next prime is 665089. The reversal of 665086 is 680566.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5676 + ... + 5791.

It is an arithmetic number, because the mean of its divisors is an integer number (129015).

2⁶⁶⁵⁰⁸⁶ is an apocalyptic number.

665086 is a deficient number, since it is larger than the sum of its proper divisors (367034).

665086 is a wasteful number, since it uses less digits than its factorization.

665086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11498.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 665086 is about 815.5280497935. The cubic root of 665086 is about 87.2889498594.

The spelling of 665086 in words is "six hundred sixty-five thousand, eighty-six".