66248522 has 8 divisors (see below), whose sum is σ = 100734276. Its totient is φ = 32670432.

The previous prime is 66248503. The next prime is 66248549. The reversal of 66248522 is 22584266.

It can be written as a sum of positive squares in 2 ways, for example, as 61324561 + 4923961 = 7831^2 + 2219^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 in 3 ways as a sum of consecutive naturals, for example, 226733 + ... + 227024.

Almost surely, 2^66248522 is an apocalyptic number.

66248522 is a deficient number, since it is larger than the sum of its proper divisors (34485754).

66248522 is a wasteful number, since it uses less digits than its factorization.

66248522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453832.

The product of its digits is 46080, while the sum is 35.

The square root of 66248522 is about 8139.3195047252. The cubic root of 66248522 is about 404.6306076570.

The spelling of 66248522 in words is "sixty-six million, two hundred forty-eight thousand, five hundred twenty-two".