990006 has 8 divisors (see below), whose sum is σ = 1980024. Its totient is φ = 330000.

The previous prime is 990001. The next prime is 990013. The reversal of 990006 is 600099.

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

990006 is an admirable number.

It is a super-2 number, since 2×990006² = 1960223760072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990001) 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, 82495 + ... + 82506.

It is an arithmetic number, because the mean of its divisors is an integer number (247503).

2⁹⁹⁰⁰⁰⁶ is an apocalyptic number.

990006 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.

990006 is a wasteful number, since it uses less digits than its factorization.

990006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165006.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 990006 is about 994.9904522155. The cubic root of 990006 is about 99.6657506854.

The spelling of 990006 in words is "nine hundred ninety thousand, six".