1066681 has 12 divisors (see below), whose sum is σ = 1354320. Its totient is φ = 830760.

The previous prime is 1066669. The next prime is 1066687. The reversal of 1066681 is 1866601.

It is not a de Polignac number, because 1066681 - 2⁷ = 1066553 is a prime.

It is a super-2 number, since 2×1066681² = 2275616711522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1066687) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 451 + ... + 1528.

It is an arithmetic number, because the mean of its divisors is an integer number (112860).

2^1066681 is an apocalyptic number.

1066681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1066681 is a deficient number, since it is larger than the sum of its proper divisors (287639).

1066681 is a wasteful number, since it uses less digits than its factorization.

1066681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2004 (or 1997 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1066681 is about 1032.8024980605. The cubic root of 1066681 is about 102.1750486408.

The spelling of 1066681 in words is "one million, sixty-six thousand, six hundred eighty-one".