990600 has 96 divisors (see below), whose sum is σ = 3333120. Its totient is φ = 241920.

The previous prime is 990599. The next prime is 990631. The reversal of 990600 is 6099.

990600 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7737 + ... + 7863.

It is an arithmetic number, because the mean of its divisors is an integer number (34720).

2⁹⁹⁰⁶⁰⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 990600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1666560).

990600 is an abundant number, since it is smaller than the sum of its proper divisors (2342520).

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

990600 is a wasteful number, since it uses less digits than its factorization.

990600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 150 counting only the distinct ones).

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

The square root of 990600 is about 995.2889027815. The cubic root of 990600 is about 99.6856797295.

Adding to 990600 its reverse (6099), we get a palindrome (996699).

It can be divided in two parts, 9 and 90600, that added together give a palindrome (90609).

The spelling of 990600 in words is "nine hundred ninety thousand, six hundred".