990966 has 8 divisors (see below), whose sum is σ = 1981944. Its totient is φ = 330320.

The previous prime is 990961. The next prime is 990967. The reversal of 990966 is 669099.

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

990966 is an admirable number.

It is a super-2 number, since 2×990966² = 1964027226312, which contains 22 as substring.

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 990966.

It is not an unprimeable number, because it can be changed into a prime (990961) 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, 82575 + ... + 82586.

It is an arithmetic number, because the mean of its divisors is an integer number (247743).

2⁹⁹⁰⁹⁶⁶ is an apocalyptic number.

990966 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.

990966 is a wasteful number, since it uses less digits than its factorization.

990966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165166.

The product of its (nonzero) digits is 26244, while the sum is 39.

The square root of 990966 is about 995.4727520128. The cubic root of 990966 is about 99.6979552750.

The spelling of 990966 in words is "nine hundred ninety thousand, nine hundred sixty-six".