1066645166 has 16 divisors (see below), whose sum is σ = 1635379200. Its totient is φ = 521537880.

The previous prime is 1066645157. The next prime is 1066645169. The reversal of 1066645166 is 6615466601.

It is a super-2 number, since 2×1066645166² = 2275463820302335112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066645169) 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, 127451 + ... + 135561.

It is an arithmetic number, because the mean of its divisors is an integer number (102211200).

Almost surely, 2^1066645166 is an apocalyptic number.

1066645166 is a deficient number, since it is larger than the sum of its proper divisors (568734034).

1066645166 is a wasteful number, since it uses less digits than its factorization.

1066645166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9559.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 1066645166 is about 32659.5340750599. The cubic root of 1066645166 is about 1021.7390447437.

The spelling of 1066645166 in words is "one billion, sixty-six million, six hundred forty-five thousand, one hundred sixty-six".