990576 has 40 divisors (see below), whose sum is σ = 2844560. Its totient is φ = 330048.

The previous prime is 990559. The next prime is 990589. The reversal of 990576 is 675099.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 990576.

It is a congruent number.

It is an unprimeable number.

990576 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 715 + ... + 1578.

It is an arithmetic number, because the mean of its divisors is an integer number (71114).

2⁹⁹⁰⁵⁷⁶ is an apocalyptic number.

It is an amenable number.

990576 is an abundant number, since it is smaller than the sum of its proper divisors (1853984).

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

990576 is a wasteful number, since it uses less digits than its factorization.

990576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2310 (or 2298 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 990576 is about 995.2768459077. The cubic root of 990576 is about 99.6848746700.

The spelling of 990576 in words is "nine hundred ninety thousand, five hundred seventy-six".