66734180 has 24 divisors (see below), whose sum is σ = 148386168. Its totient is φ = 25123328.

The previous prime is 66734177. The next prime is 66734203. The reversal of 66734180 is 8143766.

66734180 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 25080064 + 41654116 = 5008^2 + 6454^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66734180.

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 7 ways as a sum of consecutive naturals, for example, 97799 + ... + 98478.

It is an arithmetic number, because the mean of its divisors is an integer number (6182757).

Almost surely, 2^66734180 is an apocalyptic number.

It is an amenable number.

66734180 is an abundant number, since it is smaller than the sum of its proper divisors (81651988).

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

66734180 is a wasteful number, since it uses less digits than its factorization.

66734180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196303 (or 196301 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 66734180 is about 8169.0990935353. The cubic root of 66734180 is about 405.6169634361.

The spelling of 66734180 in words is "sixty-six million, seven hundred thirty-four thousand, one hundred eighty".