66336016 has 10 divisors (see below), whose sum is σ = 128526062. Its totient is φ = 33168000.

The previous prime is 66335999. The next prime is 66336029. The reversal of 66336016 is 61063366.

It can be written as a sum of positive squares in only one way, i.e., 53231616 + 13104400 = 7296^2 + 3620^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2072985 + ... + 2073016.

Almost surely, 2^66336016 is an apocalyptic number.

It is an amenable number.

66336016 is a deficient number, since it is larger than the sum of its proper divisors (62190046).

66336016 is a wasteful number, since it uses less digits than its factorization.

66336016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4146009 (or 4146003 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 66336016 is about 8144.6925049384. The cubic root of 66336016 is about 404.8086603156.

The spelling of 66336016 in words is "sixty-six million, three hundred thirty-six thousand, sixteen".