66352563 has 12 divisors (see below), whose sum is σ = 95983888. Its totient is φ = 44169840.

The previous prime is 66352523. The next prime is 66352577. The reversal of 66352563 is 36525366.

66352563 is a `hidden beast` number, since 66 + 35 + 2 + 563 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-66352563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66352523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1473 + ... + 11613.

Almost surely, 2^66352563 is an apocalyptic number.

66352563 is a deficient number, since it is larger than the sum of its proper divisors (29631325).

66352563 is a wasteful number, since it uses less digits than its factorization.

66352563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10874 (or 10871 counting only the distinct ones).

The product of its digits is 97200, while the sum is 36.

The square root of 66352563 is about 8145.7082564992. The cubic root of 66352563 is about 404.8423163013.

The spelling of 66352563 in words is "sixty-six million, three hundred fifty-two thousand, five hundred sixty-three".