1087843 has 2 divisors, whose sum is σ = 1087844. Its totient is φ = 1087842.

The previous prime is 1087841. The next prime is 1087861. The reversal of 1087843 is 3487801.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1087843 - 2¹ = 1087841 is a prime.

Together with 1087841, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1087841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 543921 + 543922.

It is an arithmetic number, because the mean of its divisors is an integer number (543922).

2^1087843 is an apocalyptic number.

1087843 is a deficient number, since it is larger than the sum of its proper divisors (1).

1087843 is an equidigital number, since it uses as much as digits as its factorization.

1087843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 1087843 is about 1042.9971236777. The cubic root of 1087843 is about 102.8463161922.

The spelling of 1087843 in words is "one million, eighty-seven thousand, eight hundred forty-three".