66304452 has 48 divisors (see below), whose sum is σ = 166664960. Its totient is φ = 20448288.

The previous prime is 66304439. The next prime is 66304457. The reversal of 66304452 is 25440366.

It is a super-3 number, since 3×66304452³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (66304457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6423 + ... + 13185.

Almost surely, 2^66304452 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 66304452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83332480).

66304452 is an abundant number, since it is smaller than the sum of its proper divisors (100360508).

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

66304452 is a wasteful number, since it uses less digits than its factorization.

66304452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6832 (or 6830 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 66304452 is about 8142.7545707825. The cubic root of 66304452 is about 404.7444447836.

The spelling of 66304452 in words is "sixty-six million, three hundred four thousand, four hundred fifty-two".