66751016 has 8 divisors (see below), whose sum is σ = 125158170. Its totient is φ = 33375504.

The previous prime is 66750973. The next prime is 66751031. The reversal of 66751016 is 61015766.

66751016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 66748900 + 2116 = 8170^2 + 46^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4171931 + ... + 4171946.

Almost surely, 2^66751016 is an apocalyptic number.

It is an amenable number.

66751016 is a deficient number, since it is larger than the sum of its proper divisors (58407154).

66751016 is a wasteful number, since it uses less digits than its factorization.

66751016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8343883 (or 8343879 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 66751016 is about 8170.1294971377. The cubic root of 66751016 is about 405.6510708605.

The spelling of 66751016 in words is "sixty-six million, seven hundred fifty-one thousand, sixteen".