986990 has 16 divisors (see below), whose sum is σ = 1788480. Its totient is φ = 392160.

The previous prime is 986989. The next prime is 987013. The reversal of 986990 is 99689.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 986990.

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 7 ways as a sum of consecutive naturals, for example, 2075 + ... + 2505.

It is an arithmetic number, because the mean of its divisors is an integer number (111780).

2⁹⁸⁶⁹⁹⁰ is an apocalyptic number.

986990 is a deficient number, since it is larger than the sum of its proper divisors (801490).

986990 is a wasteful number, since it uses less digits than its factorization.

986990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667.

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

The square root of 986990 is about 993.4737037285. The cubic root of 986990 is about 99.5644389535.

The spelling of 986990 in words is "nine hundred eighty-six thousand, nine hundred ninety".