990692 has 18 divisors (see below), whose sum is σ = 1843842. Its totient is φ = 465664.

The previous prime is 990673. The next prime is 990707. The reversal of 990692 is 296099.

It can be written as a sum of positive squares in 3 ways, for example, as 649636 + 341056 = 806^2 + 584^2 .

It is an unprimeable number.

990692 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 728 + ... + 1584.

2⁹⁹⁰⁶⁹² is an apocalyptic number.

It is an amenable number.

990692 is a deficient number, since it is larger than the sum of its proper divisors (853150).

990692 is a wasteful number, since it uses less digits than its factorization.

990692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895 (or 876 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 990692 is about 995.3351194447. The cubic root of 990692 is about 99.6887656702.

The spelling of 990692 in words is "nine hundred ninety thousand, six hundred ninety-two".