66749204 has 12 divisors (see below), whose sum is σ = 122959200. Its totient is φ = 31618008.

The previous prime is 66749203. The next prime is 66749227. The reversal of 66749204 is 40294766.

66749204 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 (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66749203) 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 3 ways as a sum of consecutive naturals, for example, 439064 + ... + 439215.

It is an arithmetic number, because the mean of its divisors is an integer number (10246600).

Almost surely, 2^66749204 is an apocalyptic number.

It is an amenable number.

66749204 is a deficient number, since it is larger than the sum of its proper divisors (56209996).

66749204 is a wasteful number, since it uses less digits than its factorization.

66749204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878302 (or 878300 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 66749204 is about 8170.0186046300. The cubic root of 66749204 is about 405.6474002728.

The spelling of 66749204 in words is "sixty-six million, seven hundred forty-nine thousand, two hundred four".