66884316 has 12 divisors (see below), whose sum is σ = 156063432. Its totient is φ = 22294768.

The previous prime is 66884269. The next prime is 66884327. The reversal of 66884316 is 61348866.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2786835 + ... + 2786858.

It is an arithmetic number, because the mean of its divisors is an integer number (13005286).

Almost surely, 2^66884316 is an apocalyptic number.

It is an amenable number.

66884316 is an abundant number, since it is smaller than the sum of its proper divisors (89179116).

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

66884316 is a wasteful number, since it uses less digits than its factorization.

66884316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5573700 (or 5573698 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 66884316 is about 8178.2831939228. The cubic root of 66884316 is about 405.9209161081.

The spelling of 66884316 in words is "sixty-six million, eight hundred eighty-four thousand, three hundred sixteen".