1066385256 has 32 divisors (see below), whose sum is σ = 2722688640. Its totient is φ = 347898368.

The previous prime is 1066385249. The next prime is 1066385261. The reversal of 1066385256 is 6525836601.

It is a happy number.

It is a super-2 number, since 2×1066385256² = 2274355028428371072, 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, 471561 + ... + 473816.

It is an arithmetic number, because the mean of its divisors is an integer number (85084020).

Almost surely, 2^1066385256 is an apocalyptic number.

It is an amenable number.

1066385256 is an abundant number, since it is smaller than the sum of its proper divisors (1656303384).

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

1066385256 is a wasteful number, since it uses less digits than its factorization.

1066385256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945433 (or 945429 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The square root of 1066385256 is about 32655.5547495369. The cubic root of 1066385256 is about 1021.6560487684.

The spelling of 1066385256 in words is "one billion, sixty-six million, three hundred eighty-five thousand, two hundred fifty-six".