1087867 has 4 divisors (see below), whose sum is σ = 1186776. Its totient is φ = 988960.

The previous prime is 1087861. The next prime is 1087873. The reversal of 1087867 is 7687801.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7687801 = 11 ⋅698891.

It is an interprime number because it is at equal distance from previous prime (1087861) and next prime (1087873).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1087867 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (1087861) 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 3 ways as a sum of consecutive naturals, for example, 49438 + ... + 49459.

It is an arithmetic number, because the mean of its divisors is an integer number (296694).

2^1087867 is an apocalyptic number.

1087867 is a deficient number, since it is larger than the sum of its proper divisors (98909).

1087867 is an equidigital number, since it uses as much as digits as its factorization.

1087867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98908.

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 1087867 is about 1043.0086289192. The cubic root of 1087867 is about 102.8470725186.

The spelling of 1087867 in words is "one million, eighty-seven thousand, eight hundred sixty-seven".