66243052 has 6 divisors (see below), whose sum is σ = 115925348. Its totient is φ = 33121524.

The previous prime is 66243049. The next prime is 66243053. The reversal of 66243052 is 25034266.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 66243052.

It is not an unprimeable number, because it can be changed into a prime (66243053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8280378 + ... + 8280385.

Almost surely, 2^66243052 is an apocalyptic number.

It is an amenable number.

66243052 is a deficient number, since it is larger than the sum of its proper divisors (49682296).

66243052 is a wasteful number, since it uses less digits than its factorization.

66243052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16560767 (or 16560765 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 66243052 is about 8138.9834746116. The cubic root of 66243052 is about 404.6194708533.

The spelling of 66243052 in words is "sixty-six million, two hundred forty-three thousand, fifty-two".