996990 has 32 divisors (see below), whose sum is σ = 2419200. Its totient is φ = 262944.

The previous prime is 996979. The next prime is 997001. The reversal of 996990 is 99699.

It is an interprime number because it is at equal distance from previous prime (996979) and next prime (997001).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4911 + ... + 5109.

It is an arithmetic number, because the mean of its divisors is an integer number (75600).

2⁹⁹⁶⁹⁹⁰ is an apocalyptic number.

996990 is an abundant number, since it is smaller than the sum of its proper divisors (1422210).

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

996990 is a wasteful number, since it uses less digits than its factorization.

996990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376.

The product of its (nonzero) digits is 39366, while the sum is 42.

The square root of 996990 is about 998.4938657799. The cubic root of 996990 is about 99.8995658302.

The spelling of 996990 in words is "nine hundred ninety-six thousand, nine hundred ninety".