66613336 has 32 divisors (see below), whose sum is σ = 132192000. Its totient is φ = 31403680.

The previous prime is 66613307. The next prime is 66613367. The reversal of 66613336 is 63331666.

66613336 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10515 + ... + 15613.

It is an arithmetic number, because the mean of its divisors is an integer number (4131000).

Almost surely, 2^66613336 is an apocalyptic number.

It is an amenable number.

66613336 is a deficient number, since it is larger than the sum of its proper divisors (65578664).

66613336 is a wasteful number, since it uses less digits than its factorization.

66613336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5199 (or 5195 counting only the distinct ones).

The product of its digits is 34992, while the sum is 34.

The square root of 66613336 is about 8161.6993328595. The cubic root of 66613336 is about 405.3719815651.

The spelling of 66613336 in words is "sixty-six million, six hundred thirteen thousand, three hundred thirty-six".