66004446 has 8 divisors (see below), whose sum is σ = 132008904. Its totient is φ = 22001480.

The previous prime is 66004399. The next prime is 66004453. The reversal of 66004446 is 64440066.

It is a sphenic number, since it is the product of 3 distinct primes.

66004446 is an admirable number.

It is a congruent number.

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, 5500365 + ... + 5500376.

It is an arithmetic number, because the mean of its divisors is an integer number (16501113).

Almost surely, 2^66004446 is an apocalyptic number.

66004446 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66004446 is a wasteful number, since it uses less digits than its factorization.

66004446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11000746.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 66004446 is about 8124.3120324123. The cubic root of 66004446 is about 404.1330762792.

The spelling of 66004446 in words is "sixty-six million, four thousand, four hundred forty-six".