1117845 has 12 divisors (see below), whose sum is σ = 1937676. Its totient is φ = 596160.

The previous prime is 1117819. The next prime is 1117861. The reversal of 1117845 is 5487111.

It can be written as a sum of positive squares in 2 ways, for example, as 213444 + 904401 = 462^2 + 951^2 .

It is not a de Polignac number, because 1117845 - 2⁵ = 1117813 is a prime.

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

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12376 + ... + 12465.

It is an arithmetic number, because the mean of its divisors is an integer number (161473).

2^1117845 is an apocalyptic number.

1117845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1117845 is a deficient number, since it is larger than the sum of its proper divisors (819831).

1117845 is a wasteful number, since it uses less digits than its factorization.

1117845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24852 (or 24849 counting only the distinct ones).

The product of its digits is 1120, while the sum is 27.

The square root of 1117845 is about 1057.2818924015. The cubic root of 1117845 is about 103.7832331723.

The spelling of 1117845 in words is "one million, one hundred seventeen thousand, eight hundred forty-five".