66133616 has 20 divisors (see below), whose sum is σ = 128580312. Its totient is φ = 32951616.

The previous prime is 66133609. The next prime is 66133619. The reversal of 66133616 is 61633166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66133619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2366 + ... + 11741.

Almost surely, 2^66133616 is an apocalyptic number.

It is an amenable number.

66133616 is a deficient number, since it is larger than the sum of its proper divisors (62446696).

66133616 is a wasteful number, since it uses less digits than its factorization.

66133616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14408 (or 14402 counting only the distinct ones).

The product of its digits is 11664, while the sum is 32.

The square root of 66133616 is about 8132.2577430871. The cubic root of 66133616 is about 404.3965325400.

The spelling of 66133616 in words is "sixty-six million, one hundred thirty-three thousand, six hundred sixteen".