3699565568 has 66 divisors (see below), whose sum is σ = 7847571618. Its totient is φ = 1737195520.

The previous prime is 3699565549. The next prime is 3699565577. The reversal of 3699565568 is 8655659963.

It can be written as a sum of positive squares in 3 ways, for example, as 451477504 + 3248088064 = 21248^2 + 56992^2 .

Its product of digits (52488000) is a multiple of the sum of its prime divisors (480).

It is a self number, because there is not a number n which added to its sum of digits gives 3699565568.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8024858 + ... + 8025318.

Almost surely, 2^3699565568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3699565568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3923785809).

3699565568 is an abundant number, since it is smaller than the sum of its proper divisors (4148006050).

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

3699565568 is an frugal number, since it uses more digits than its factorization.

3699565568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959 (or 480 counting only the distinct ones).

The product of its digits is 52488000, while the sum is 62.

The square root of 3699565568 is about 60824.0541891117. The cubic root of 3699565568 is about 1546.6198373984.

The spelling of 3699565568 in words is "three billion, six hundred ninety-nine million, five hundred sixty-five thousand, five hundred sixty-eight".