66516170 has 16 divisors (see below), whose sum is σ = 136833408. Its totient is φ = 22805520.

The previous prime is 66516097. The next prime is 66516179. The reversal of 66516170 is 7161566.

It is not an unprimeable number, because it can be changed into a prime (66516179) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 475046 + ... + 475185.

It is an arithmetic number, because the mean of its divisors is an integer number (8552088).

Almost surely, 2^66516170 is an apocalyptic number.

66516170 is an abundant number, since it is smaller than the sum of its proper divisors (70317238).

66516170 is a wasteful number, since it uses less digits than its factorization.

66516170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950245.

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

The square root of 66516170 is about 8155.7446011998. The cubic root of 66516170 is about 405.1747861123.

It can be divided in two parts, 6651 and 6170, that added together give a palindrome (12821).

The spelling of 66516170 in words is "sixty-six million, five hundred sixteen thousand, one hundred seventy".