66716036 has 6 divisors (see below), whose sum is σ = 116753070. Its totient is φ = 33358016.

The previous prime is 66716033. The next prime is 66716099. The reversal of 66716036 is 63061766.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 60684100 + 6031936 = 7790^2 + 2456^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66715987 and 66716005.

It is not an unprimeable number, because it can be changed into a prime (66716033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8339501 + ... + 8339508.

It is an arithmetic number, because the mean of its divisors is an integer number (19458845).

Almost surely, 2^66716036 is an apocalyptic number.

It is an amenable number.

66716036 is a deficient number, since it is larger than the sum of its proper divisors (50037034).

66716036 is a wasteful number, since it uses less digits than its factorization.

66716036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16679013 (or 16679011 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 66716036 is about 8167.9884916667. The cubic root of 66716036 is about 405.5801997604.

The spelling of 66716036 in words is "sixty-six million, seven hundred sixteen thousand, thirty-six".