1087987 has 2 divisors, whose sum is σ = 1087988. Its totient is φ = 1087986.

The previous prime is 1087981. The next prime is 1088023. The reversal of 1087987 is 7897801.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1087987 is a prime.

It is not a weakly prime, because it can be changed into another prime (1087981) 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 as a sum of consecutive naturals, namely, 543993 + 543994.

It is an arithmetic number, because the mean of its divisors is an integer number (543994).

2^1087987 is an apocalyptic number.

1087987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1087987 is an equidigital number, since it uses as much as digits as its factorization.

1087987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 40.

The square root of 1087987 is about 1043.0661532233. The cubic root of 1087987 is about 102.8508539842.

The spelling of 1087987 in words is "one million, eighty-seven thousand, nine hundred eighty-seven".