1066664906 has 16 divisors (see below), whose sum is σ = 1644883200. Its totient is φ = 518521200.

The previous prime is 1066664891. The next prime is 1066664933. The reversal of 1066664906 is 6094666601.

1066664906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1066664906² = 2275548043383977672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23381 + ... + 51768.

It is an arithmetic number, because the mean of its divisors is an integer number (102805200).

Almost surely, 2^1066664906 is an apocalyptic number.

1066664906 is a deficient number, since it is larger than the sum of its proper divisors (578218294).

1066664906 is a wasteful number, since it uses less digits than its factorization.

1066664906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75349.

The product of its (nonzero) digits is 279936, while the sum is 44.

The square root of 1066664906 is about 32659.8362825045. The cubic root of 1066664906 is about 1021.7453476846.

The spelling of 1066664906 in words is "one billion, sixty-six million, six hundred sixty-four thousand, nine hundred six".