66654752 has 12 divisors (see below), whose sum is σ = 131226606. Its totient is φ = 33327360.

The previous prime is 66654737. The next prime is 66654779. The reversal of 66654752 is 25745666.

It can be written as a sum of positive squares in only one way, i.e., 64705936 + 1948816 = 8044^2 + 1396^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1041449 + ... + 1041512.

Almost surely, 2^66654752 is an apocalyptic number.

It is an amenable number.

66654752 is a deficient number, since it is larger than the sum of its proper divisors (64571854).

66654752 is a wasteful number, since it uses less digits than its factorization.

66654752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2082971 (or 2082963 counting only the distinct ones).

The product of its digits is 302400, while the sum is 41.

The square root of 66654752 is about 8164.2361553301. The cubic root of 66654752 is about 405.4559757959.

The spelling of 66654752 in words is "sixty-six million, six hundred fifty-four thousand, seven hundred fifty-two".