1066989 has 32 divisors (see below), whose sum is σ = 1843200. Its totient is φ = 532800.

The previous prime is 1066987. The next prime is 1066999. The reversal of 1066989 is 9896601.

1066989 = T₃₂ + T₃₃ + ... + T₁₈₅.

It is not a de Polignac number, because 1066989 - 2¹ = 1066987 is a prime.

It is a super-2 number, since 2×1066989² = 2276931052242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066981) 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 in 31 ways as a sum of consecutive naturals, for example, 7087 + ... + 7235.

It is an arithmetic number, because the mean of its divisors is an integer number (57600).

2^1066989 is an apocalyptic number.

It is an amenable number.

1066989 is a deficient number, since it is larger than the sum of its proper divisors (776211).

1066989 is a wasteful number, since it uses less digits than its factorization.

1066989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 1066989 is about 1032.9515961554. The cubic root of 1066989 is about 102.1848819107.

The spelling of 1066989 in words is "one million, sixty-six thousand, nine hundred eighty-nine".