66486248 has 8 divisors (see below), whose sum is σ = 124661730. Its totient is φ = 33243120.

The previous prime is 66486239. The next prime is 66486253. The reversal of 66486248 is 84268466.

It can be written as a sum of positive squares in only one way, i.e., 41705764 + 24780484 = 6458^2 + 4978^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 66486199 and 66486208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4155383 + ... + 4155398.

Almost surely, 2^66486248 is an apocalyptic number.

It is an amenable number.

66486248 is a deficient number, since it is larger than the sum of its proper divisors (58175482).

66486248 is a wasteful number, since it uses less digits than its factorization.

66486248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8310787 (or 8310783 counting only the distinct ones).

The product of its digits is 442368, while the sum is 44.

The square root of 66486248 is about 8153.9099823336. The cubic root of 66486248 is about 405.1140216479.

The spelling of 66486248 in words is "sixty-six million, four hundred eighty-six thousand, two hundred forty-eight".