66804036 has 24 divisors (see below), whose sum is σ = 167866944. Its totient is φ = 20555040.

The previous prime is 66804013. The next prime is 66804037. The reversal of 66804036 is 63040866.

It is a junction number, because it is equal to n+sod(n) for n = 66803988 and 66804006.

It is not an unprimeable number, because it can be changed into a prime (66804037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213960 + ... + 214271.

It is an arithmetic number, because the mean of its divisors is an integer number (6994456).

Almost surely, 2^66804036 is an apocalyptic number.

It is an amenable number.

66804036 is an abundant number, since it is smaller than the sum of its proper divisors (101062908).

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

66804036 is a wasteful number, since it uses less digits than its factorization.

66804036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428251 (or 428249 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 66804036 is about 8173.3735996833. The cubic root of 66804036 is about 405.7584446460.

The spelling of 66804036 in words is "sixty-six million, eight hundred four thousand, thirty-six".