1197885 has 16 divisors (see below), whose sum is σ = 2064384. Its totient is φ = 589632.

The previous prime is 1197881. The next prime is 1197901. The reversal of 1197885 is 5887911.

It is not a de Polignac number, because 1197885 - 2² = 1197881 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1197881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2877 + ... + 3266.

It is an arithmetic number, because the mean of its divisors is an integer number (129024).

2^1197885 is an apocalyptic number.

1197885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1197885 is a deficient number, since it is larger than the sum of its proper divisors (866499).

1197885 is a wasteful number, since it uses less digits than its factorization.

1197885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6164.

The product of its digits is 20160, while the sum is 39.

The square root of 1197885 is about 1094.4793282653. The cubic root of 1197885 is about 106.2033890130.

The spelling of 1197885 in words is "one million, one hundred ninety-seven thousand, eight hundred eighty-five".