1066664 has 16 divisors (see below), whose sum is σ = 2015520. Its totient is φ = 529200.

The previous prime is 1066651. The next prime is 1066669. The reversal of 1066664 is 4666601.

It is a super-2 number, since 2×1066664² = 2275544177792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1066669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 767 + ... + 1649.

It is an arithmetic number, because the mean of its divisors is an integer number (125970).

2^1066664 is an apocalyptic number.

It is an amenable number.

1066664 is a deficient number, since it is larger than the sum of its proper divisors (948856).

1066664 is a wasteful number, since it uses less digits than its factorization.

1066664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040 (or 1036 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 1066664 is about 1032.7942679934. The cubic root of 1066664 is about 102.1745058402.

The spelling of 1066664 in words is "one million, sixty-six thousand, six hundred sixty-four".