66847386 has 16 divisors (see below), whose sum is σ = 133779168. Its totient is φ = 22268400.

The previous prime is 66847379. The next prime is 66847387. The reversal of 66847386 is 68374866.

It is a happy number.

66847386 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (66847387) 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, 12156 + ... + 16776.

It is an arithmetic number, because the mean of its divisors is an integer number (8361198).

Almost surely, 2^66847386 is an apocalyptic number.

66847386 is an abundant number, since it is smaller than the sum of its proper divisors (66931782).

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

66847386 is a wasteful number, since it uses less digits than its factorization.

66847386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7037.

The product of its digits is 1161216, while the sum is 48.

The square root of 66847386 is about 8176.0250733471. The cubic root of 66847386 is about 405.8461929633.

The spelling of 66847386 in words is "sixty-six million, eight hundred forty-seven thousand, three hundred eighty-six".