66031876 has 27 divisors (see below), whose sum is σ = 123268789. Its totient is φ = 30943808.

The previous prime is 66031871. The next prime is 66031879. The reversal of 66031876 is 67813066.

The square root of 66031876 is 8126.

It is a perfect power (a square), and thus also a powerful number.

66031876 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., 51408900 + 14622976 = 7170^2 + 3824^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66031871) 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 8 ways as a sum of consecutive naturals, for example, 276165 + ... + 276403.

Almost surely, 2^66031876 is an apocalyptic number.

66031876 is the 8126-th square number.

It is an amenable number.

66031876 is a deficient number, since it is larger than the sum of its proper divisors (57236913).

66031876 is a wasteful number, since it uses less digits than its factorization.

66031876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516 (or 258 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The cubic root of 66031876 is about 404.1890514733.

The spelling of 66031876 in words is "sixty-six million, thirty-one thousand, eight hundred seventy-six".