66849164 has 12 divisors (see below), whose sum is σ = 117255600. Its totient is φ = 33347568.

The previous prime is 66849137. The next prime is 66849193. The reversal of 66849164 is 46194866.

66849164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

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, 17279 + ... + 20790.

It is an arithmetic number, because the mean of its divisors is an integer number (9771300).

Almost surely, 2^66849164 is an apocalyptic number.

It is an amenable number.

66849164 is a deficient number, since it is larger than the sum of its proper divisors (50406436).

66849164 is a wasteful number, since it uses less digits than its factorization.

66849164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38512 (or 38510 counting only the distinct ones).

The product of its digits is 248832, while the sum is 44.

The square root of 66849164 is about 8176.1338051673. The cubic root of 66849164 is about 405.8497911500.

The spelling of 66849164 in words is "sixty-six million, eight hundred forty-nine thousand, one hundred sixty-four".