66104856 has 32 divisors (see below), whose sum is σ = 183625200. Its totient is φ = 22034880.

The previous prime is 66104851. The next prime is 66104873. The reversal of 66104856 is 65840166.

66104856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 66104856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66104851) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 152805 + ... + 153236.

Almost surely, 2^66104856 is an apocalyptic number.

It is an amenable number.

66104856 is an abundant number, since it is smaller than the sum of its proper divisors (117520344).

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

66104856 is a wasteful number, since it uses less digits than its factorization.

66104856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306056 (or 306046 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 66104856 is about 8130.4892841698. The cubic root of 66104856 is about 404.3379030999.

The spelling of 66104856 in words is "sixty-six million, one hundred four thousand, eight hundred fifty-six".