66063447 has 6 divisors (see below), whose sum is σ = 95424992. Its totient is φ = 44042292.

The previous prime is 66063443. The next prime is 66063457. The reversal of 66063447 is 74436066.

66063447 is a `hidden beast` number, since 6 + 606 + 3 + 4 + 47 = 666.

66063447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66063447 - 2² = 66063443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66063443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3670183 + ... + 3670200.

Almost surely, 2^66063447 is an apocalyptic number.

66063447 is a deficient number, since it is larger than the sum of its proper divisors (29361545).

66063447 is a wasteful number, since it uses less digits than its factorization.

66063447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7340389 (or 7340386 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 66063447 is about 8127.9423595397. The cubic root of 66063447 is about 404.2534578386.

The spelling of 66063447 in words is "sixty-six million, sixty-three thousand, four hundred forty-seven".