66825168 has 40 divisors (see below), whose sum is σ = 173420448. Its totient is φ = 22173312.

The previous prime is 66825167. The next prime is 66825173. The reversal of 66825168 is 86152866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66825163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7830 + ... + 13962.

Almost surely, 2^66825168 is an apocalyptic number.

It is an amenable number.

66825168 is an abundant number, since it is smaller than the sum of its proper divisors (106595280).

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

66825168 is a wasteful number, since it uses less digits than its factorization.

66825168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6371 (or 6365 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 66825168 is about 8174.6662317186. Note that the first 3 decimals coincide. The cubic root of 66825168 is about 405.8012244141.

The spelling of 66825168 in words is "sixty-six million, eight hundred twenty-five thousand, one hundred sixty-eight".