2643268665 has 8 divisors (see below), whose sum is σ = 4229229888. Its totient is φ = 1409743280.

The previous prime is 2643268591. The next prime is 2643268697. The reversal of 2643268665 is 5668623462.

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

It is not a de Polignac number, because 2643268665 - 2¹¹ = 2643266617 is a prime.

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, 88108941 + ... + 88108970.

It is an arithmetic number, because the mean of its divisors is an integer number (528653736).

Almost surely, 2^2643268665 is an apocalyptic number.

It is an amenable number.

2643268665 is a deficient number, since it is larger than the sum of its proper divisors (1585961223).

2643268665 is a wasteful number, since it uses less digits than its factorization.

2643268665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176217919.

The product of its digits is 2488320, while the sum is 48.

The square root of 2643268665 is about 51412.7286282298. The cubic root of 2643268665 is about 1382.6548112223.

The spelling of 2643268665 in words is "two billion, six hundred forty-three million, two hundred sixty-eight thousand, six hundred sixty-five".