1066216 has 8 divisors (see below), whose sum is σ = 1999170. Its totient is φ = 533104.

The previous prime is 1066159. The next prime is 1066217. The reversal of 1066216 is 6126601.

It can be written as a sum of positive squares in only one way, i.e., 940900 + 125316 = 970^2 + 354^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1066216² = 2273633117312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1066217) 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 as a sum of consecutive naturals, namely, 66631 + ... + 66646.

2^1066216 is an apocalyptic number.

It is an amenable number.

1066216 is a deficient number, since it is larger than the sum of its proper divisors (932954).

1066216 is a wasteful number, since it uses less digits than its factorization.

1066216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133283 (or 133279 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1066216 is about 1032.5773578769. The cubic root of 1066216 is about 102.1601993706.

The spelling of 1066216 in words is "one million, sixty-six thousand, two hundred sixteen".