1066646 has 16 divisors (see below), whose sum is σ = 1860000. Its totient is φ = 449280.

The previous prime is 1066643. The next prime is 1066651. The reversal of 1066646 is 6466601.

It is a super-2 number, since 2×1066646² = 2275467378632, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230 + ... + 1478.

It is an arithmetic number, because the mean of its divisors is an integer number (116250).

2^1066646 is an apocalyptic number.

1066646 is a deficient number, since it is larger than the sum of its proper divisors (793354).

1066646 is a wasteful number, since it uses less digits than its factorization.

1066646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319.

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

The square root of 1066646 is about 1032.7855537332. The cubic root of 1066646 is about 102.1739311040.

The spelling of 1066646 in words is "one million, sixty-six thousand, six hundred forty-six".