66801168 has 60 divisors (see below), whose sum is σ = 213660928. Its totient is φ = 19085760.

The previous prime is 66801167. The next prime is 66801173. The reversal of 66801168 is 86110866.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (66801167) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32128 + ... + 34143.

Almost surely, 2^66801168 is an apocalyptic number.

It is an amenable number.

66801168 is an abundant number, since it is smaller than the sum of its proper divisors (146859760).

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

66801168 is a wasteful number, since it uses less digits than its factorization.

66801168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66292 (or 66283 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 66801168 is about 8173.1981500512. The cubic root of 66801168 is about 405.7526379516.

The spelling of 66801168 in words is "sixty-six million, eight hundred one thousand, one hundred sixty-eight".