990659328 has 36 divisors (see below), whose sum is σ = 2636600568. Its totient is φ = 330219520.

The previous prime is 990659323. The next prime is 990659357. The reversal of 990659328 is 823956099.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (990659321) 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, 644193 + ... + 645728.

Almost surely, 2^990659328 is an apocalyptic number.

It is an amenable number.

990659328 is an abundant number, since it is smaller than the sum of its proper divisors (1645941240).

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

990659328 is a wasteful number, since it uses less digits than its factorization.

990659328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289940 (or 1289926 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 51.

The square root of 990659328 is about 31474.7411109289. The cubic root of 990659328 is about 996.8766978060.

The spelling of 990659328 in words is "nine hundred ninety million, six hundred fifty-nine thousand, three hundred twenty-eight".