1066440312 has 72 divisors (see below), whose sum is σ = 3359842200. Its totient is φ = 304696224.

The previous prime is 1066440253. The next prime is 1066440367. The reversal of 1066440312 is 2130446601.

1066440312 is a `hidden beast` number, since 1 + 0 + 6 + 644 + 0 + 3 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×1066440312² = 2274589878117314688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 147612 + ... + 154667.

It is an arithmetic number, because the mean of its divisors is an integer number (46664475).

Almost surely, 2^1066440312 is an apocalyptic number.

1066440312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1066440312 is an abundant number, since it is smaller than the sum of its proper divisors (2293401888).

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

1066440312 is a wasteful number, since it uses less digits than its factorization.

1066440312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302305 (or 302291 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1066440312 is about 32656.3977192831. The cubic root of 1066440312 is about 1021.6736306967.

Adding to 1066440312 its reverse (2130446601), we get a palindrome (3196886913).

The spelling of 1066440312 in words is "one billion, sixty-six million, four hundred forty thousand, three hundred twelve".