66908 has 12 divisors (see below), whose sum is σ = 120120. Its totient is φ = 32592.

The previous prime is 66889. The next prime is 66919. The reversal of 66908 is 80966.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

66908 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23 + ... + 366.

It is an arithmetic number, because the mean of its divisors is an integer number (10010).

2⁶⁶⁹⁰⁸ is an apocalyptic number.

It is an amenable number.

66908 is a deficient number, since it is larger than the sum of its proper divisors (53212).

66908 is a wasteful number, since it uses less digits than its factorization.

66908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436 (or 434 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 66908 is about 258.6658075587. The cubic root of 66908 is about 40.5968823186.

The spelling of 66908 in words is "sixty-six thousand, nine hundred eight".