66065456 has 20 divisors (see below), whose sum is σ = 130726752. Its totient is φ = 32329536.

The previous prime is 66065437. The next prime is 66065471. The reversal of 66065456 is 65456066.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43175 + ... + 44678.

Almost surely, 2^66065456 is an apocalyptic number.

It is an amenable number.

66065456 is a deficient number, since it is larger than the sum of its proper divisors (64661296).

66065456 is a wasteful number, since it uses less digits than its factorization.

66065456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87908 (or 87902 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 38.

The square root of 66065456 is about 8128.0659446144. The cubic root of 66065456 is about 404.2575556012.

The spelling of 66065456 in words is "sixty-six million, sixty-five thousand, four hundred fifty-six".