66000006648 has 48 divisors (see below), whose sum is σ = 178905542400. Its totient is φ = 21980860800.

The previous prime is 66000006647. The next prime is 66000006727. The reversal of 66000006648 is 84660000066.

66000006648 is a `hidden beast` number, since 6 + 6 + 0 + 0 + 0 + 0 + 0 + 6 + 648 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66000006647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 315333 + ... + 481076.

It is an arithmetic number, because the mean of its divisors is an integer number (3727198800).

Almost surely, 2^66000006648 is an apocalyptic number.

It is an amenable number.

66000006648 is an abundant number, since it is smaller than the sum of its proper divisors (112905535752).

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

66000006648 is a wasteful number, since it uses less digits than its factorization.

66000006648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797572 (or 797565 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 66000006648 in words is "sixty-six billion, six thousand, six hundred forty-eight".