6745743815 has 4 divisors (see below), whose sum is σ = 8094892584. Its totient is φ = 5396595048.

The previous prime is 6745743779. The next prime is 6745743821. The reversal of 6745743815 is 5183475476.

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

It is a cyclic number.

It is not a de Polignac number, because 6745743815 - 2⁶ = 6745743751 is a prime.

It is a super-2 number, since 2×6745743815² = 91010119235221508450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 674574377 + ... + 674574386.

It is an arithmetic number, because the mean of its divisors is an integer number (2023723146).

Almost surely, 2^6745743815 is an apocalyptic number.

6745743815 is a deficient number, since it is larger than the sum of its proper divisors (1349148769).

6745743815 is a wasteful number, since it uses less digits than its factorization.

6745743815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349148768.

The product of its digits is 2822400, while the sum is 50.

The square root of 6745743815 is about 82132.4772242990. The cubic root of 6745743815 is about 1889.4842722823.

The spelling of 6745743815 in words is "six billion, seven hundred forty-five million, seven hundred forty-three thousand, eight hundred fifteen".