66446056 has 16 divisors (see below), whose sum is σ = 124862400. Its totient is φ = 33149424.

The previous prime is 66446033. The next prime is 66446069. The reversal of 66446056 is 65064466.

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, 5266 + ... + 12673.

It is an arithmetic number, because the mean of its divisors is an integer number (7803900).

Almost surely, 2^66446056 is an apocalyptic number.

It is an amenable number.

66446056 is a deficient number, since it is larger than the sum of its proper divisors (58416344).

66446056 is a wasteful number, since it uses less digits than its factorization.

66446056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18408 (or 18404 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 66446056 is about 8151.4450252701. The cubic root of 66446056 is about 405.0323725584.

The spelling of 66446056 in words is "sixty-six million, four hundred forty-six thousand, fifty-six".