665056060 has 48 divisors (see below), whose sum is σ = 1445320800. Its totient is φ = 256886784.

The previous prime is 665056027. The next prime is 665056087. The reversal of 665056060 is 60650566.

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, 72196 + ... + 80884.

It is an arithmetic number, because the mean of its divisors is an integer number (30110850).

Almost surely, 2^665056060 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 665056060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (722660400).

665056060 is an abundant number, since it is smaller than the sum of its proper divisors (780264740).

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

665056060 is a wasteful number, since it uses less digits than its factorization.

665056060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8830 (or 8828 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 665056060 is about 25788.6808503266. The cubic root of 665056060 is about 872.8764001858.

The spelling of 665056060 in words is "six hundred sixty-five million, fifty-six thousand, sixty".