66552716 has 24 divisors (see below), whose sum is σ = 118552896. Its totient is φ = 32686160.

The previous prime is 66552701. The next prime is 66552719. The reversal of 66552716 is 61725566.

It is a self number, because there is not a number n which added to its sum of digits gives 66552716.

It is not an unprimeable number, because it can be changed into a prime (66552719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55475 + ... + 56661.

It is an arithmetic number, because the mean of its divisors is an integer number (4939704).

Almost surely, 2^66552716 is an apocalyptic number.

It is an amenable number.

66552716 is a deficient number, since it is larger than the sum of its proper divisors (52000180).

66552716 is a wasteful number, since it uses less digits than its factorization.

66552716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429 (or 1427 counting only the distinct ones).

The product of its digits is 75600, while the sum is 38.

The square root of 66552716 is about 8157.9848001820. The cubic root of 66552716 is about 405.2489776292.

The spelling of 66552716 in words is "sixty-six million, five hundred fifty-two thousand, seven hundred sixteen".