66168708 has 24 divisors (see below), whose sum is σ = 154818048. Its totient is φ = 21995616.

The previous prime is 66168673. The next prime is 66168721. The reversal of 66168708 is 80786166.

It is a self number, because there is not a number n which added to its sum of digits gives 66168708.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2916 + ... + 11867.

It is an arithmetic number, because the mean of its divisors is an integer number (6450752).

Almost surely, 2^66168708 is an apocalyptic number.

It is an amenable number.

66168708 is an abundant number, since it is smaller than the sum of its proper divisors (88649340).

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

66168708 is a wasteful number, since it uses less digits than its factorization.

66168708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15163 (or 15161 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 66168708 is about 8134.4150373582. The cubic root of 66168708 is about 404.4680472233.

The spelling of 66168708 in words is "sixty-six million, one hundred sixty-eight thousand, seven hundred eight".