66484716 has 12 divisors (see below), whose sum is σ = 155131032. Its totient is φ = 22161568.

The previous prime is 66484711. The next prime is 66484729. The reversal of 66484716 is 61748466.

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

It is not an unprimeable number, because it can be changed into a prime (66484711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2770185 + ... + 2770208.

It is an arithmetic number, because the mean of its divisors is an integer number (12927586).

Almost surely, 2^66484716 is an apocalyptic number.

It is an amenable number.

66484716 is an abundant number, since it is smaller than the sum of its proper divisors (88646316).

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

66484716 is a wasteful number, since it uses less digits than its factorization.

66484716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5540400 (or 5540398 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 66484716 is about 8153.8160391316. The cubic root of 66484716 is about 405.1109100297.

The spelling of 66484716 in words is "sixty-six million, four hundred eighty-four thousand, seven hundred sixteen".