66164416 has 28 divisors (see below), whose sum is σ = 135534400. Its totient is φ = 32014080.

The previous prime is 66164411. The next prime is 66164431. The reversal of 66164416 is 61446166.

66164416 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 (66164411) 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, 14691 + ... + 18658.

Almost surely, 2^66164416 is an apocalyptic number.

It is an amenable number.

66164416 is an abundant number, since it is smaller than the sum of its proper divisors (69369984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66164416 is a wasteful number, since it uses less digits than its factorization.

66164416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33392 (or 33382 counting only the distinct ones).

The product of its digits is 20736, while the sum is 34.

The square root of 66164416 is about 8134.1512157078. The cubic root of 66164416 is about 404.4593018287.

The spelling of 66164416 in words is "sixty-six million, one hundred sixty-four thousand, four hundred sixteen".