66214672 has 20 divisors (see below), whose sum is σ = 131421276. Its totient is φ = 32299520.

The previous prime is 66214657. The next prime is 66214679. The reversal of 66214672 is 27641266.

66214672 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 2 ways, for example, as 4999696 + 61214976 = 2236^2 + 7824^2 .

It is not an unprimeable number, because it can be changed into a prime (66214679) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 49813 + ... + 51124.

Almost surely, 2^66214672 is an apocalyptic number.

It is an amenable number.

66214672 is a deficient number, since it is larger than the sum of its proper divisors (65206604).

66214672 is a wasteful number, since it uses less digits than its factorization.

66214672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100986 (or 100980 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 66214672 is about 8137.2398268700. The cubic root of 66214672 is about 404.5616799329.

The spelling of 66214672 in words is "sixty-six million, two hundred fourteen thousand, six hundred seventy-two".