6740006905 has 4 divisors (see below), whose sum is σ = 8088008292. Its totient is φ = 5392005520.

The previous prime is 6740006893. The next prime is 6740006909. The reversal of 6740006905 is 5096000476.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 710329104 + 6029677801 = 26652^2 + 77651^2 .

It is a de Polignac number, because none of the positive numbers 2^k-6740006905 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6740006909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 674000686 + ... + 674000695.

It is an arithmetic number, because the mean of its divisors is an integer number (2022002073).

Almost surely, 2^6740006905 is an apocalyptic number.

It is an amenable number.

6740006905 is a deficient number, since it is larger than the sum of its proper divisors (1348001387).

6740006905 is a wasteful number, since it uses less digits than its factorization.

6740006905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348001386.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 6740006905 is about 82097.5450607386. The cubic root of 6740006905 is about 1888.9484837977.

The spelling of 6740006905 in words is "six billion, seven hundred forty million, six thousand, nine hundred five".