1066642266 has 16 divisors (see below), whose sum is σ = 2150083584. Its totient is φ = 352747584.

The previous prime is 1066642261. The next prime is 1066642267. The reversal of 1066642266 is 6622466601.

It is a super-2 number, since 2×1066642266² = 2275451447235229512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1066642261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 699135 + ... + 700658.

It is an arithmetic number, because the mean of its divisors is an integer number (134380224).

Almost surely, 2^1066642266 is an apocalyptic number.

1066642266 is an abundant number, since it is smaller than the sum of its proper divisors (1083441318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1066642266 is a wasteful number, since it uses less digits than its factorization.

1066642266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399925.

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 1066642266 is about 32659.4896775807. The cubic root of 1066642266 is about 1021.7381187732.

The spelling of 1066642266 in words is "one billion, sixty-six million, six hundred forty-two thousand, two hundred sixty-six".