665246 has 4 divisors (see below), whose sum is σ = 997872. Its totient is φ = 332622.

The previous prime is 665239. The next prime is 665251. The reversal of 665246 is 642566.

665246 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 665246.

It is an unprimeable number.

665246 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166310 + ... + 166313.

It is an arithmetic number, because the mean of its divisors is an integer number (249468).

2⁶⁶⁵²⁴⁶ is an apocalyptic number.

665246 is a deficient number, since it is larger than the sum of its proper divisors (332626).

665246 is a wasteful number, since it uses less digits than its factorization.

665246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332625.

The product of its digits is 8640, while the sum is 29.

The square root of 665246 is about 815.6261398459. The cubic root of 665246 is about 87.2959490105.

The spelling of 665246 in words is "six hundred sixty-five thousand, two hundred forty-six".