1066640204 has 12 divisors (see below), whose sum is σ = 2133280464. Its totient is φ = 457131504.

The previous prime is 1066640167. The next prime is 1066640209. The reversal of 1066640204 is 4020466601.

1066640204 is an admirable number.

It is a super-2 number, since 2×1066640204² = 2275442649578323232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1066640209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19047119 + ... + 19047174.

It is an arithmetic number, because the mean of its divisors is an integer number (177773372).

Almost surely, 2^1066640204 is an apocalyptic number.

1066640204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1066640204 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1066640204 is a wasteful number, since it uses less digits than its factorization.

1066640204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38094304 (or 38094302 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 1066640204 is about 32659.4581094053. The cubic root of 1066640204 is about 1021.7374603752.

The spelling of 1066640204 in words is "one billion, sixty-six million, six hundred forty thousand, two hundred four".