66336636 has 12 divisors (see below), whose sum is σ = 154785512. Its totient is φ = 22112208.

The previous prime is 66336631. The next prime is 66336643. The reversal of 66336636 is 63663366.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 66336594 and 66336603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66336631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2764015 + ... + 2764038.

Almost surely, 2^66336636 is an apocalyptic number.

It is an amenable number.

66336636 is an abundant number, since it is smaller than the sum of its proper divisors (88448876).

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

66336636 is a wasteful number, since it uses less digits than its factorization.

66336636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5528060 (or 5528058 counting only the distinct ones).

The product of its digits is 209952, while the sum is 39.

The square root of 66336636 is about 8144.7305664460. The cubic root of 66336636 is about 404.8099214736.

The spelling of 66336636 in words is "sixty-six million, three hundred thirty-six thousand, six hundred thirty-six".