66904108 has 12 divisors (see below), whose sum is σ = 118004992. Its totient is φ = 33188400.

The previous prime is 66904099. The next prime is 66904121. The reversal of 66904108 is 80140966.

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, 65343 + ... + 66358.

Almost surely, 2^66904108 is an apocalyptic number.

It is an amenable number.

66904108 is a deficient number, since it is larger than the sum of its proper divisors (51100884).

66904108 is a wasteful number, since it uses less digits than its factorization.

66904108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131832 (or 131830 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 66904108 is about 8179.4931383308. The cubic root of 66904108 is about 405.9609513756.

The spelling of 66904108 in words is "sixty-six million, nine hundred four thousand, one hundred eight".