1066587 has 4 divisors (see below), whose sum is σ = 1422120. Its totient is φ = 711056.

The previous prime is 1066577. The next prime is 1066619. The reversal of 1066587 is 7856601.

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

It is a cyclic number.

It is not a de Polignac number, because 1066587 - 2⁶ = 1066523 is a prime.

It is a super-2 number, since 2×1066587² = 2275215657138, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1066517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177762 + ... + 177767.

It is an arithmetic number, because the mean of its divisors is an integer number (355530).

2^1066587 is an apocalyptic number.

1066587 is a deficient number, since it is larger than the sum of its proper divisors (355533).

1066587 is an equidigital number, since it uses as much as digits as its factorization.

1066587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355532.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 1066587 is about 1032.7569898093. The cubic root of 1066587 is about 102.1720472009.

It can be divided in two parts, 1066 and 587, that added together give a triangular number (1653 = T₅₇).

The spelling of 1066587 in words is "one million, sixty-six thousand, five hundred eighty-seven".