990337684 has 48 divisors (see below), whose sum is σ = 2119169920. Its totient is φ = 395487360.

The previous prime is 990337681. The next prime is 990337693. The reversal of 990337684 is 486733099.

990337684 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990337681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17194 + ... + 47710.

Almost surely, 2^990337684 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 990337684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1059584960).

990337684 is an abundant number, since it is smaller than the sum of its proper divisors (1128832236).

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

990337684 is a wasteful number, since it uses less digits than its factorization.

990337684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30608 (or 30606 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 49.

The square root of 990337684 is about 31469.6311386073. The cubic root of 990337684 is about 996.7687985827.

The spelling of 990337684 in words is "nine hundred ninety million, three hundred thirty-seven thousand, six hundred eighty-four".