1066864 has 20 divisors (see below), whose sum is σ = 2086920. Its totient is φ = 528320.

The previous prime is 1066859. The next prime is 1066867. The reversal of 1066864 is 4686601.

It is a super-2 number, since 2×1066864² = 2276397588992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066867) 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, 1842 + ... + 2350.

It is an arithmetic number, because the mean of its divisors is an integer number (104346).

2^1066864 is an apocalyptic number.

It is an amenable number.

1066864 is a deficient number, since it is larger than the sum of its proper divisors (1020056).

1066864 is a wasteful number, since it uses less digits than its factorization.

1066864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648 (or 642 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 1066864 is about 1032.8910881598. The cubic root of 1066864 is about 102.1808913637.

The spelling of 1066864 in words is "one million, sixty-six thousand, eight hundred sixty-four".