66888836 has 12 divisors (see below), whose sum is σ = 133777728. Its totient is φ = 28666632.

The previous prime is 66888823. The next prime is 66888841. The reversal of 66888836 is 63888866.

66888836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

66888836 is an admirable number.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1194416 + ... + 1194471.

It is an arithmetic number, because the mean of its divisors is an integer number (11148144).

Almost surely, 2^66888836 is an apocalyptic number.

It is an amenable number.

66888836 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66888836 is a wasteful number, since it uses less digits than its factorization.

66888836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2388898 (or 2388896 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 53.

The square root of 66888836 is about 8178.5595308709. The cubic root of 66888836 is about 405.9300598622.

The spelling of 66888836 in words is "sixty-six million, eight hundred eighty-eight thousand, eight hundred thirty-six".