1066864120 has 32 divisors (see below), whose sum is σ = 2743365600. Its totient is φ = 365781888.

The previous prime is 1066864091. The next prime is 1066864159. The reversal of 1066864120 is 214686601.

It is a super-2 number, since 2×1066864120² = 2276398101086748800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 1904835 + ... + 1905394.

It is an arithmetic number, because the mean of its divisors is an integer number (85730175).

Almost surely, 2^1066864120 is an apocalyptic number.

1066864120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1066864120 is an abundant number, since it is smaller than the sum of its proper divisors (1676501480).

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

1066864120 is a wasteful number, since it uses less digits than its factorization.

1066864120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3810247 (or 3810243 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 1066864120 is about 32662.8859716958. The cubic root of 1066864120 is about 1021.8089519482.

The spelling of 1066864120 in words is "one billion, sixty-six million, eight hundred sixty-four thousand, one hundred twenty".