990698 has 24 divisors (see below), whose sum is σ = 1672320. Its totient is φ = 438480.

The previous prime is 990673. The next prime is 990707. The reversal of 990698 is 896099.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31943 + ... + 31973.

It is an arithmetic number, because the mean of its divisors is an integer number (69680).

2⁹⁹⁰⁶⁹⁸ is an apocalyptic number.

990698 is a deficient number, since it is larger than the sum of its proper divisors (681622).

990698 is a wasteful number, since it uses less digits than its factorization.

990698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 990698 is about 995.3381335004. The cubic root of 990698 is about 99.6889669206.

The spelling of 990698 in words is "nine hundred ninety thousand, six hundred ninety-eight".