2195867 has 2 divisors, whose sum is σ = 2195868. Its totient is φ = 2195866.

The previous prime is 2195863. The next prime is 2195891. The reversal of 2195867 is 7685912.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2195867 - 2² = 2195863 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2195867.

It is not a weakly prime, because it can be changed into another prime (2195861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1097933 + 1097934.

It is an arithmetic number, because the mean of its divisors is an integer number (1097934).

2^2195867 is an apocalyptic number.

2195867 is a deficient number, since it is larger than the sum of its proper divisors (1).

2195867 is an equidigital number, since it uses as much as digits as its factorization.

2195867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 38.

The square root of 2195867 is about 1481.8458084430. The cubic root of 2195867 is about 129.9776490174.

The spelling of 2195867 in words is "two million, one hundred ninety-five thousand, eight hundred sixty-seven".