66480636 has 24 divisors (see below), whose sum is σ = 155701504. Its totient is φ = 22077360.

The previous prime is 66480611. The next prime is 66480641. The reversal of 66480636 is 63608466.

66480636 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

66480636 is strictly pandigital in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 66480594 and 66480603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6970 + ... + 13473.

Almost surely, 2^66480636 is an apocalyptic number.

It is an amenable number.

66480636 is an abundant number, since it is smaller than the sum of its proper divisors (89220868).

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

66480636 is a wasteful number, since it uses less digits than its factorization.

66480636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20721 (or 20719 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 66480636 is about 8153.5658456898. The cubic root of 66480636 is about 405.1026229806.

The spelling of 66480636 in words is "sixty-six million, four hundred eighty thousand, six hundred thirty-six".