66000885 has 16 divisors (see below), whose sum is σ = 111813696. Its totient is φ = 33129728.

The previous prime is 66000877. The next prime is 66000899. The reversal of 66000885 is 58800066.

It is a cyclic number.

It is not a de Polignac number, because 66000885 - 2³ = 66000877 is a prime.

It is a super-2 number, since 2×66000885² = 8712233641566450, 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 15 ways as a sum of consecutive naturals, for example, 129159 + ... + 129668.

It is an arithmetic number, because the mean of its divisors is an integer number (6988356).

Almost surely, 2^66000885 is an apocalyptic number.

It is an amenable number.

66000885 is a deficient number, since it is larger than the sum of its proper divisors (45812811).

66000885 is a wasteful number, since it uses less digits than its factorization.

66000885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258852.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 66000885 is about 8124.0928724381. The cubic root of 66000885 is about 404.1258083660.

The spelling of 66000885 in words is "sixty-six million, eight hundred eighty-five", and thus it is an aban number.