1099668 has 12 divisors (see below), whose sum is σ = 2565920. Its totient is φ = 366552.

The previous prime is 1099649. The next prime is 1099669. The reversal of 1099668 is 8669901.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45808 + ... + 45831.

2^1099668 is an apocalyptic number.

It is an amenable number.

1099668 is an abundant number, since it is smaller than the sum of its proper divisors (1466252).

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

1099668 is a wasteful number, since it uses less digits than its factorization.

1099668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91646 (or 91644 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 1099668 is about 1048.6505614360. The cubic root of 1099668 is about 103.2176251370.

The spelling of 1099668 in words is "one million, ninety-nine thousand, six hundred sixty-eight".