66255160 has 64 divisors (see below), whose sum is σ = 155131200. Its totient is φ = 25445376.

The previous prime is 66255151. The next prime is 66255173. The reversal of 66255160 is 6155266.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131469 + ... + 131971.

It is an arithmetic number, because the mean of its divisors is an integer number (2423925).

Almost surely, 2^66255160 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 66255160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77565600).

66255160 is an abundant number, since it is smaller than the sum of its proper divisors (88876040).

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

66255160 is a wasteful number, since it uses less digits than its factorization.

66255160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640 (or 636 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 66255160 is about 8139.7272681583. The cubic root of 66255160 is about 404.6441216604.

The spelling of 66255160 in words is "sixty-six million, two hundred fifty-five thousand, one hundred sixty".