66320116 has 6 divisors (see below), whose sum is σ = 116060210. Its totient is φ = 33160056.

The previous prime is 66320101. The next prime is 66320117. The reversal of 66320116 is 61102366.

It can be written as a sum of positive squares in only one way, i.e., 66259600 + 60516 = 8140^2 + 246^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66320117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8290011 + ... + 8290018.

Almost surely, 2^66320116 is an apocalyptic number.

It is an amenable number.

66320116 is a deficient number, since it is larger than the sum of its proper divisors (49740094).

66320116 is a wasteful number, since it uses less digits than its factorization.

66320116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16580033 (or 16580031 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 66320116 is about 8143.7163506596. The cubic root of 66320116 is about 404.7763150307.

The spelling of 66320116 in words is "sixty-six million, three hundred twenty thousand, one hundred sixteen".