665046 has 12 divisors (see below), whose sum is σ = 1440972. Its totient is φ = 221676.

The previous prime is 665039. The next prime is 665047. The reversal of 665046 is 640566.

665046 is a `hidden beast` number, since 6 + 650 + 4 + 6 = 666.

665046 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18456 + ... + 18491.

It is an arithmetic number, because the mean of its divisors is an integer number (120081).

2⁶⁶⁵⁰⁴⁶ is an apocalyptic number.

665046 is an abundant number, since it is smaller than the sum of its proper divisors (775926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

665046 is a wasteful number, since it uses less digits than its factorization.

665046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36955 (or 36952 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 665046 is about 815.5035254369. The cubic root of 665046 is about 87.2871998962.

The spelling of 665046 in words is "six hundred sixty-five thousand, forty-six".