1087885 has 4 divisors (see below), whose sum is σ = 1305468. Its totient is φ = 870304.

The previous prime is 1087873. The next prime is 1087897. The reversal of 1087885 is 5887801.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1087873) and next prime (1087897).

It can be written as a sum of positive squares in 2 ways, for example, as 385641 + 702244 = 621^2 + 838^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1087885 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108784 + ... + 108793.

It is an arithmetic number, because the mean of its divisors is an integer number (326367).

2^1087885 is an apocalyptic number.

It is an amenable number.

1087885 is a deficient number, since it is larger than the sum of its proper divisors (217583).

1087885 is an equidigital number, since it uses as much as digits as its factorization.

1087885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217582.

The product of its (nonzero) digits is 17920, while the sum is 37.

The square root of 1087885 is about 1043.0172577671. The cubic root of 1087885 is about 102.8476397562.

The spelling of 1087885 in words is "one million, eighty-seven thousand, eight hundred eighty-five".