6740991065 has 8 divisors (see below), whose sum is σ = 8096762760. Its totient is φ = 5387743872.

The previous prime is 6740991053. The next prime is 6740991109. The reversal of 6740991065 is 5601990476.

It can be written as a sum of positive squares in 4 ways, for example, as 92871769 + 6648119296 = 9637^2 + 81536^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 6740991065 - 2⁶ = 6740991001 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 625244 + ... + 635933.

It is an arithmetic number, because the mean of its divisors is an integer number (1012095345).

Almost surely, 2^6740991065 is an apocalyptic number.

It is an amenable number.

6740991065 is a deficient number, since it is larger than the sum of its proper divisors (1355771695).

6740991065 is a wasteful number, since it uses less digits than its factorization.

6740991065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262251.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 6740991065 is about 82103.5386874403. The cubic root of 6740991065 is about 1889.0404192655.

The spelling of 6740991065 in words is "six billion, seven hundred forty million, nine hundred ninety-one thousand, sixty-five".