1100997 has 12 divisors (see below), whose sum is σ = 1613664. Its totient is φ = 723240.

The previous prime is 1100977. The next prime is 1101071. The reversal of 1100997 is 7990011.

It is not a de Polignac number, because 1100997 - 2⁶ = 1100933 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

1100997 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1100997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100947) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 223 + ... + 1500.

It is an arithmetic number, because the mean of its divisors is an integer number (134472).

2^1100997 is an apocalyptic number.

It is an amenable number.

1100997 is a deficient number, since it is larger than the sum of its proper divisors (512667).

1100997 is a wasteful number, since it uses less digits than its factorization.

1100997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800 (or 1797 counting only the distinct ones).

The product of its (nonzero) digits is 567, while the sum is 27.

The square root of 1100997 is about 1049.2840416208. The cubic root of 1100997 is about 103.2591895000.

The spelling of 1100997 in words is "one million, one hundred thousand, nine hundred ninety-seven".