1066878785 has 16 divisors (see below), whose sum is σ = 1540156800. Its totient is φ = 693069696.

The previous prime is 1066878751. The next prime is 1066878853. The reversal of 1066878785 is 5878786601.

It is a cyclic number.

It is not a de Polignac number, because 1066878785 - 2¹⁰ = 1066877761 is a prime.

It is a super-2 number, since 2×1066878785² = 2276460683766152450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1066878785.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 801500 + ... + 802829.

It is an arithmetic number, because the mean of its divisors is an integer number (96259800).

Almost surely, 2^1066878785 is an apocalyptic number.

It is an amenable number.

1066878785 is a deficient number, since it is larger than the sum of its proper divisors (473278015).

1066878785 is a wasteful number, since it uses less digits than its factorization.

1066878785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604360.

The product of its (nonzero) digits is 4515840, while the sum is 56.

The square root of 1066878785 is about 32663.1104611915. The cubic root of 1066878785 is about 1021.8136338189.

The spelling of 1066878785 in words is "one billion, sixty-six million, eight hundred seventy-eight thousand, seven hundred eighty-five".