6601002165 has 48 divisors (see below), whose sum is σ = 12210352128. Its totient is φ = 3287305728.

The previous prime is 6601002119. The next prime is 6601002169. The reversal of 6601002165 is 5612001066.

It is a happy number.

It is not a de Polignac number, because 6601002165 - 2²⁰ = 6599953589 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6601002169) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 63184 + ... + 131126.

It is an arithmetic number, because the mean of its divisors is an integer number (254382336).

Almost surely, 2^6601002165 is an apocalyptic number.

It is an amenable number.

6601002165 is a deficient number, since it is larger than the sum of its proper divisors (5609349963).

6601002165 is a wasteful number, since it uses less digits than its factorization.

6601002165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68098 (or 68095 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 6601002165 is about 81246.5517114419. The cubic root of 6601002165 is about 1875.8723919010.

The spelling of 6601002165 in words is "six billion, six hundred one million, two thousand, one hundred sixty-five".