66846894 has 8 divisors (see below), whose sum is σ = 133693800. Its totient is φ = 22282296.

The previous prime is 66846889. The next prime is 66846917. The reversal of 66846894 is 49864866.

66846894 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

66846894 is an admirable number.

It is a congruent number.

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, 5570569 + ... + 5570580.

It is an arithmetic number, because the mean of its divisors is an integer number (16711725).

Almost surely, 2^66846894 is an apocalyptic number.

66846894 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.

66846894 is a wasteful number, since it uses less digits than its factorization.

66846894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11141154.

The product of its digits is 1990656, while the sum is 51.

The square root of 66846894 is about 8175.9949853214. The cubic root of 66846894 is about 405.8451972783.

The spelling of 66846894 in words is "sixty-six million, eight hundred forty-six thousand, eight hundred ninety-four".