6601001165 has 16 divisors (see below), whose sum is σ = 8842274496. Its totient is φ = 4689081600.

The previous prime is 6601001161. The next prime is 6601001201. The reversal of 6601001165 is 5611001066.

It is not a de Polignac number, because 6601001165 - 2² = 6601001161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6601001161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1393196 + ... + 1397925.

It is an arithmetic number, because the mean of its divisors is an integer number (552642156).

Almost surely, 2^6601001165 is an apocalyptic number.

It is an amenable number.

6601001165 is a deficient number, since it is larger than the sum of its proper divisors (2241273331).

6601001165 is a wasteful number, since it uses less digits than its factorization.

6601001165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791180.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 6601001165 is about 81246.5455573343. The cubic root of 6601001165 is about 1875.8722971743.

Subtracting from 6601001165 its reverse (5611001066), we obtain a palindrome (990000099).

The spelling of 6601001165 in words is "six billion, six hundred one million, one thousand, one hundred sixty-five".