66936684 has 24 divisors (see below), whose sum is σ = 165373488. Its totient is φ = 20999680.

The previous prime is 66936673. The next prime is 66936697. The reversal of 66936684 is 48663966.

It is a super-3 number, since 3×66936684³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163857 + ... + 164264.

It is an arithmetic number, because the mean of its divisors is an integer number (6890562).

Almost surely, 2^66936684 is an apocalyptic number.

It is an amenable number.

66936684 is an abundant number, since it is smaller than the sum of its proper divisors (98436804).

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

66936684 is a wasteful number, since it uses less digits than its factorization.

66936684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328145 (or 328143 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 48.

The square root of 66936684 is about 8181.4842174266. The cubic root of 66936684 is about 406.0268289356.

The spelling of 66936684 in words is "sixty-six million, nine hundred thirty-six thousand, six hundred eighty-four".