6603869664 has 288 divisors, whose sum is σ = 22714159104. Its totient is φ = 1779148800.

The previous prime is 6603869659. The next prime is 6603869669. The reversal of 6603869664 is 4669683066.

It is an interprime number because it is at equal distance from previous prime (6603869659) and next prime (6603869669).

It is a tau number, because it is divible by the number of its divisors (288).

It is a super-2 number, since 2×6603869664² = 87222189078198945792, which contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 6603869664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6603869669) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3383889 + ... + 3385839.

It is an arithmetic number, because the mean of its divisors is an integer number (78868608).

Almost surely, 2^6603869664 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 6603869664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11357079552).

6603869664 is an abundant number, since it is smaller than the sum of its proper divisors (16110289440).

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

6603869664 is a wasteful number, since it uses less digits than its factorization.

6603869664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070 (or 2059 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 54.

The square root of 6603869664 is about 81264.1966920242. The cubic root of 6603869664 is about 1876.1439811419.

The spelling of 6603869664 in words is "six billion, six hundred three million, eight hundred sixty-nine thousand, six hundred sixty-four".