66936128 has 28 divisors (see below), whose sum is σ = 151802592. Its totient is φ = 28686720.

The previous prime is 66936101. The next prime is 66936151. The reversal of 66936128 is 82163966.

It is a tau number, because it is divible by the number of its divisors (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74258 + ... + 75153.

Almost surely, 2^66936128 is an apocalyptic number.

It is an amenable number.

66936128 is an abundant number, since it is smaller than the sum of its proper divisors (84866464).

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

66936128 is a wasteful number, since it uses less digits than its factorization.

66936128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149430 (or 149420 counting only the distinct ones).

The product of its digits is 93312, while the sum is 41.

The square root of 66936128 is about 8181.4502381913. The cubic root of 66936128 is about 406.0257047312.

It can be divided in two parts, 6693 and 6128, that added together give a palindrome (12821).

The spelling of 66936128 in words is "sixty-six million, nine hundred thirty-six thousand, one hundred twenty-eight".