66589488 has 120 divisors (see below), whose sum is σ = 219954176. Its totient is φ = 18403200.

The previous prime is 66589487. The next prime is 66589511. The reversal of 66589488 is 88498566.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (66589483) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30183 + ... + 32313.

Almost surely, 2^66589488 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 66589488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109977088).

66589488 is an abundant number, since it is smaller than the sum of its proper divisors (153364688).

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

66589488 is a wasteful number, since it uses less digits than its factorization.

66589488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2183 (or 2174 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The square root of 66589488 is about 8160.2382318165. The cubic root of 66589488 is about 405.3236005377.

The spelling of 66589488 in words is "sixty-six million, five hundred eighty-nine thousand, four hundred eighty-eight".