6166664565 has 8 divisors (see below), whose sum is σ = 9866663328. Its totient is φ = 3288887760.

The previous prime is 6166664557. The next prime is 6166664587. The reversal of 6166664565 is 5654666616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6166664565 - 2³ = 6166664557 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205555471 + ... + 205555500.

It is an arithmetic number, because the mean of its divisors is an integer number (1233332916).

Almost surely, 2^6166664565 is an apocalyptic number.

It is an amenable number.

6166664565 is a deficient number, since it is larger than the sum of its proper divisors (3699998763).

6166664565 is a wasteful number, since it uses less digits than its factorization.

6166664565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411110979.

The product of its digits is 4665600, while the sum is 51.

The square root of 6166664565 is about 78528.1132143133. The cubic root of 6166664565 is about 1833.7921468932.

The spelling of 6166664565 in words is "six billion, one hundred sixty-six million, six hundred sixty-four thousand, five hundred sixty-five".