66130584 has 64 divisors (see below), whose sum is σ = 180364800. Its totient is φ = 20082816.

The previous prime is 66130553. The next prime is 66130609. The reversal of 66130584 is 48503166.

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, 23307 + ... + 25989.

It is an arithmetic number, because the mean of its divisors is an integer number (2818200).

Almost surely, 2^66130584 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 66130584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90182400).

66130584 is an abundant number, since it is smaller than the sum of its proper divisors (114234216).

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

66130584 is a wasteful number, since it uses less digits than its factorization.

66130584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784 (or 2780 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 66130584 is about 8132.0713228550. The cubic root of 66130584 is about 404.3903523798.

The spelling of 66130584 in words is "sixty-six million, one hundred thirty thousand, five hundred eighty-four".