3445521666 has 8 divisors (see below), whose sum is σ = 6891043344. Its totient is φ = 1148507220.

The previous prime is 3445521649. The next prime is 3445521713. The reversal of 3445521666 is 6661255443.

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

3445521666 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287126800 + ... + 287126811.

It is an arithmetic number, because the mean of its divisors is an integer number (861380418).

Almost surely, 2^3445521666 is an apocalyptic number.

3445521666 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.

3445521666 is a wasteful number, since it uses less digits than its factorization.

3445521666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574253616.

The product of its digits is 518400, while the sum is 42.

The square root of 3445521666 is about 58698.5661324022. The cubic root of 3445521666 is about 1510.3757183855.

The spelling of 3445521666 in words is "three billion, four hundred forty-five million, five hundred twenty-one thousand, six hundred sixty-six".