66648084 has 24 divisors (see below), whose sum is σ = 156703008. Its totient is φ = 22045920.

The previous prime is 66648079. The next prime is 66648097. The reversal of 66648084 is 48084666.

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, 19627 + ... + 22770.

It is an arithmetic number, because the mean of its divisors is an integer number (6529292).

Almost surely, 2^66648084 is an apocalyptic number.

It is an amenable number.

66648084 is an abundant number, since it is smaller than the sum of its proper divisors (90054924).

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

66648084 is a wasteful number, since it uses less digits than its factorization.

66648084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42535 (or 42533 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The square root of 66648084 is about 8163.8277786832. The cubic root of 66648084 is about 405.4424550265.

The spelling of 66648084 in words is "sixty-six million, six hundred forty-eight thousand, eighty-four".