66366160 has 80 divisors (see below), whose sum is σ = 181166976. Its totient is φ = 22132224.

The previous prime is 66366151. The next prime is 66366163. The reversal of 66366160 is 6166366.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66366163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19119 + ... + 22321.

Almost surely, 2^66366160 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66366160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90583488).

66366160 is an abundant number, since it is smaller than the sum of its proper divisors (114800816).

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

66366160 is a wasteful number, since it uses less digits than its factorization.

66366160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3260 (or 3254 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 66366160 is about 8146.5428250271. The cubic root of 66366160 is about 404.8699679085.

The spelling of 66366160 in words is "sixty-six million, three hundred sixty-six thousand, one hundred sixty".