66288844 has 6 divisors (see below), whose sum is σ = 116005484. Its totient is φ = 33144420.

The previous prime is 66288787. The next prime is 66288857. The reversal of 66288844 is 44888266.

It is a junction number, because it is equal to n+sod(n) for n = 66288794 and 66288803.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 8286102 + ... + 8286109.

Almost surely, 2^66288844 is an apocalyptic number.

It is an amenable number.

66288844 is a deficient number, since it is larger than the sum of its proper divisors (49716640).

66288844 is a wasteful number, since it uses less digits than its factorization.

66288844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16572215 (or 16572213 counting only the distinct ones).

The product of its digits is 589824, while the sum is 46.

The square root of 66288844 is about 8141.7961163370. The cubic root of 66288844 is about 404.7126834822.

The spelling of 66288844 in words is "sixty-six million, two hundred eighty-eight thousand, eight hundred forty-four".