66104028 has 36 divisors (see below), whose sum is σ = 172489408. Its totient is φ = 21323520.

The previous prime is 66104011. The next prime is 66104033. The reversal of 66104028 is 82040166.

66104028 is a `hidden beast` number, since 6 + 610 + 40 + 2 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 66103992 and 66104010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28501 + ... + 30732.

Almost surely, 2^66104028 is an apocalyptic number.

It is an amenable number.

66104028 is an abundant number, since it is smaller than the sum of its proper divisors (106385380).

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

66104028 is a wasteful number, since it uses less digits than its factorization.

66104028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59274 (or 59269 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 66104028 is about 8130.4383645656. The cubic root of 66104028 is about 404.3362149073.

The spelling of 66104028 in words is "sixty-six million, one hundred four thousand, twenty-eight".