663006 has 8 divisors (see below), whose sum is σ = 1326024. Its totient is φ = 221000.

The previous prime is 663001. The next prime is 663007. The reversal of 663006 is 600366.

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

663006 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663001) by changing a digit.

663006 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 in 3 ways as a sum of consecutive naturals, for example, 55245 + ... + 55256.

It is an arithmetic number, because the mean of its divisors is an integer number (165753).

2⁶⁶³⁰⁰⁶ is an apocalyptic number.

663006 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

663006 is a wasteful number, since it uses less digits than its factorization.

663006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110506.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 663006 is about 814.2518038052. The cubic root of 663006 is about 87.1978585732.

The spelling of 663006 in words is "six hundred sixty-three thousand, six".