66231056 has 20 divisors (see below), whose sum is σ = 128784912. Its totient is φ = 32996256.

The previous prime is 66231049. The next prime is 66231059. The reversal of 66231056 is 65013266.

66231056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (66231059) 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, 2786 + ... + 11841.

Almost surely, 2^66231056 is an apocalyptic number.

It is an amenable number.

66231056 is a deficient number, since it is larger than the sum of its proper divisors (62553856).

66231056 is a wasteful number, since it uses less digits than its factorization.

66231056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14918 (or 14912 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 66231056 is about 8138.2464941780. The cubic root of 66231056 is about 404.5950451058.

The spelling of 66231056 in words is "sixty-six million, two hundred thirty-one thousand, fifty-six".