991068 has 24 divisors (see below), whose sum is σ = 2490768. Its totient is φ = 304896.

The previous prime is 991063. The next prime is 991069. The reversal of 991068 is 860199.

It is a happy number.

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 991068.

It is not an unprimeable number, because it can be changed into a prime (991063) by changing a digit.

991068 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 3021 + ... + 3332.

It is an arithmetic number, because the mean of its divisors is an integer number (103782).

2⁹⁹¹⁰⁶⁸ is an apocalyptic number.

It is an amenable number.

991068 is an abundant number, since it is smaller than the sum of its proper divisors (1499700).

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

991068 is a wasteful number, since it uses less digits than its factorization.

991068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6373 (or 6371 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 991068 is about 995.5239826343. The cubic root of 991068 is about 99.7013757902.

The spelling of 991068 in words is "nine hundred ninety-one thousand, sixty-eight".