66067016 has 8 divisors (see below), whose sum is σ = 123875670. Its totient is φ = 33033504.

The previous prime is 66067003. The next prime is 66067019. The reversal of 66067016 is 61076066.

It can be written as a sum of positive squares in only one way, i.e., 53436100 + 12630916 = 7310^2 + 3554^2 .

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

It is not an unprimeable number, because it can be changed into a prime (66067019) by changing a digit.

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, 4129181 + ... + 4129196.

Almost surely, 2^66067016 is an apocalyptic number.

It is an amenable number.

66067016 is a deficient number, since it is larger than the sum of its proper divisors (57808654).

66067016 is a wasteful number, since it uses less digits than its factorization.

66067016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8258383 (or 8258379 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 66067016 is about 8128.1619078362. The cubic root of 66067016 is about 404.2607374800.

It can be divided in two parts, 660 and 67016, that added together give a palindrome (67676).

The spelling of 66067016 in words is "sixty-six million, sixty-seven thousand, sixteen".