3320661568 has 28 divisors (see below), whose sum is σ = 7530787072. Its totient is φ = 1423140480.

The previous prime is 3320661563. The next prime is 3320661583. The reversal of 3320661568 is 8651660233.

It is a tau number, because it is divible by the number of its divisors (28).

It is a super-2 number, since 2×3320661568² = 22053586498384437248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3320661568.

It is not an unprimeable number, because it can be changed into a prime (3320661563) 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, 3705648 + ... + 3706543.

Almost surely, 2^3320661568 is an apocalyptic number.

It is an amenable number.

3320661568 is an abundant number, since it is smaller than the sum of its proper divisors (4210125504).

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

3320661568 is an equidigital number, since it uses as much as digits as its factorization.

3320661568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7412210 (or 7412200 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 3320661568 is about 57625.1817177178. The cubic root of 3320661568 is about 1491.9062681451.

The spelling of 3320661568 in words is "three billion, three hundred twenty million, six hundred sixty-one thousand, five hundred sixty-eight".