1066187 has 4 divisors (see below), whose sum is σ = 1073136. Its totient is φ = 1059240.

The previous prime is 1066159. The next prime is 1066217. The reversal of 1066187 is 7816601.

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 1066187 - 2¹⁶ = 1000651 is a prime.

It is a super-2 number, since 2×1066187² = 2273509437938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1066157) 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, 3239 + ... + 3552.

It is an arithmetic number, because the mean of its divisors is an integer number (268284).

2^1066187 is an apocalyptic number.

1066187 is a deficient number, since it is larger than the sum of its proper divisors (6949).

1066187 is an equidigital number, since it uses as much as digits as its factorization.

1066187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6948.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 1066187 is about 1032.5633152500. The cubic root of 1066187 is about 102.1592731440.

The spelling of 1066187 in words is "one million, sixty-six thousand, one hundred eighty-seven".