66734856 has 48 divisors (see below), whose sum is σ = 181162800. Its totient is φ = 22192992.

The previous prime is 66734819. The next prime is 66734861. The reversal of 66734856 is 65843766.

66734856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11 ways as a sum of consecutive naturals, for example, 41475 + ... + 43053.

It is an arithmetic number, because the mean of its divisors is an integer number (3774225).

Almost surely, 2^66734856 is an apocalyptic number.

It is an amenable number.

66734856 is an abundant number, since it is smaller than the sum of its proper divisors (114427944).

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

66734856 is a wasteful number, since it uses less digits than its factorization.

66734856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178 (or 2171 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 66734856 is about 8169.1404688621. The cubic root of 66734856 is about 405.6183330299.

The spelling of 66734856 in words is "sixty-six million, seven hundred thirty-four thousand, eight hundred fifty-six".