66019452 has 24 divisors (see below), whose sum is σ = 162153600. Its totient is φ = 20848176.

The previous prime is 66019451. The next prime is 66019469. The reversal of 66019452 is 25491066.

66019452 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

66019452 is strictly pandigital in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66019451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144552 + ... + 145007.

It is an arithmetic number, because the mean of its divisors is an integer number (6756400).

Almost surely, 2^66019452 is an apocalyptic number.

It is an amenable number.

66019452 is an abundant number, since it is smaller than the sum of its proper divisors (96134148).

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

66019452 is a wasteful number, since it uses less digits than its factorization.

66019452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289585 (or 289583 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 66019452 is about 8125.2355042792. The cubic root of 66019452 is about 404.1637002841.

The spelling of 66019452 in words is "sixty-six million, nineteen thousand, four hundred fifty-two".