66548452 has 6 divisors (see below), whose sum is σ = 116459798. Its totient is φ = 33274224.

The previous prime is 66548399. The next prime is 66548473. The reversal of 66548452 is 25484566.

It can be written as a sum of positive squares in only one way, i.e., 64256256 + 2292196 = 8016^2 + 1514^2 .

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, 8318553 + ... + 8318560.

Almost surely, 2^66548452 is an apocalyptic number.

It is an amenable number.

66548452 is a deficient number, since it is larger than the sum of its proper divisors (49911346).

66548452 is a wasteful number, since it uses less digits than its factorization.

66548452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16637117 (or 16637115 counting only the distinct ones).

The product of its digits is 230400, while the sum is 40.

The square root of 66548452 is about 8157.7234569456. The cubic root of 66548452 is about 405.2403227430.

The spelling of 66548452 in words is "sixty-six million, five hundred forty-eight thousand, four hundred fifty-two".