1087605 has 12 divisors (see below), whose sum is σ = 1885260. Its totient is φ = 580032.

The previous prime is 1087591. The next prime is 1087621. The reversal of 1087605 is 5067801.

It can be written as a sum of positive squares in 2 ways, for example, as 799236 + 288369 = 894^2 + 537^2 .

It is not a de Polignac number, because 1087605 - 2⁴ = 1087589 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12040 + ... + 12129.

It is an arithmetic number, because the mean of its divisors is an integer number (157105).

2^1087605 is an apocalyptic number.

1087605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1087605 is a deficient number, since it is larger than the sum of its proper divisors (797655).

1087605 is a wasteful number, since it uses less digits than its factorization.

1087605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24180 (or 24177 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 1087605 is about 1042.8830231622. The cubic root of 1087605 is about 102.8388153522.

The spelling of 1087605 in words is "one million, eighty-seven thousand, six hundred five".