665846 has 8 divisors (see below), whose sum is σ = 1013880. Its totient is φ = 327888.

The previous prime is 665843. The next prime is 665857. The reversal of 665846 is 648566.

665846 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (665843) 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, 2351 + ... + 2618.

It is an arithmetic number, because the mean of its divisors is an integer number (126735).

2⁶⁶⁵⁸⁴⁶ is an apocalyptic number.

665846 is a deficient number, since it is larger than the sum of its proper divisors (348034).

665846 is a wasteful number, since it uses less digits than its factorization.

665846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5038.

The product of its digits is 34560, while the sum is 35.

The square root of 665846 is about 815.9938725260. The cubic root of 665846 is about 87.3221858364.

The spelling of 665846 in words is "six hundred sixty-five thousand, eight hundred forty-six".