66189348 has 36 divisors (see below), whose sum is σ = 170876160. Its totient is φ = 21593136.

The previous prime is 66189329. The next prime is 66189349. The reversal of 66189348 is 84398166.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66189349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17868 + ... + 21251.

It is an arithmetic number, because the mean of its divisors is an integer number (4746560).

Almost surely, 2^66189348 is an apocalyptic number.

It is an amenable number.

66189348 is an abundant number, since it is smaller than the sum of its proper divisors (104686812).

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

66189348 is a wasteful number, since it uses less digits than its factorization.

66189348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39176 (or 39171 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 66189348 is about 8135.6836221672. The cubic root of 66189348 is about 404.5100980803.

It can be divided in two parts, 661 and 89348, that added together give a palindrome (90009).

The spelling of 66189348 in words is "sixty-six million, one hundred eighty-nine thousand, three hundred forty-eight".