6605601669 has 24 divisors (see below), whose sum is σ = 9671975040. Its totient is φ = 4343594112.

The previous prime is 6605601647. The next prime is 6605601671. The reversal of 6605601669 is 9661065066.

It is not a de Polignac number, because 6605601669 - 2⁵ = 6605601637 is a prime.

It is a super-2 number, since 2×6605601669² = 87267946818991171122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6605601619) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 794317 + ... + 802589.

It is an arithmetic number, because the mean of its divisors is an integer number (402998960).

Almost surely, 2^6605601669 is an apocalyptic number.

It is an amenable number.

6605601669 is a deficient number, since it is larger than the sum of its proper divisors (3066373371).

6605601669 is a wasteful number, since it uses less digits than its factorization.

6605601669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9481 (or 9478 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 6605601669 is about 81274.8526236744. The cubic root of 6605601669 is about 1876.3079863328.

The spelling of 6605601669 in words is "six billion, six hundred five million, six hundred one thousand, six hundred sixty-nine".