66336616 has 32 divisors (see below), whose sum is σ = 128937600. Its totient is φ = 31973760.

The previous prime is 66336593. The next prime is 66336617. The reversal of 66336616 is 61663366.

It is not an unprimeable number, because it can be changed into a prime (66336617) 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, 25956 + ... + 28396.

It is an arithmetic number, because the mean of its divisors is an integer number (4029300).

Almost surely, 2^66336616 is an apocalyptic number.

It is an amenable number.

66336616 is a deficient number, since it is larger than the sum of its proper divisors (62600984).

66336616 is a wasteful number, since it uses less digits than its factorization.

66336616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2569 (or 2565 counting only the distinct ones).

The product of its digits is 69984, while the sum is 37.

The square root of 66336616 is about 8144.7293386582. The cubic root of 66336616 is about 404.8098807912.

The spelling of 66336616 in words is "sixty-six million, three hundred thirty-six thousand, six hundred sixteen".