6731749769 has 4 divisors (see below), whose sum is σ = 6731915520. Its totient is φ = 6731584020.

The previous prime is 6731749751. The next prime is 6731749781. The reversal of 6731749769 is 9679471376.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6731749769 - 2¹² = 6731745673 is a prime.

It is a super-2 number, since 2×6731749769² = 90632909904863106722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6731749069) 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, 23912 + ... + 118470.

It is an arithmetic number, because the mean of its divisors is an integer number (1682978880).

Almost surely, 2^6731749769 is an apocalyptic number.

It is an amenable number.

6731749769 is a deficient number, since it is larger than the sum of its proper divisors (165751).

6731749769 is an equidigital number, since it uses as much as digits as its factorization.

6731749769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165750.

The product of its digits is 12002256, while the sum is 59.

The square root of 6731749769 is about 82047.2410809772. The cubic root of 6731749769 is about 1888.1767893237.

The spelling of 6731749769 in words is "six billion, seven hundred thirty-one million, seven hundred forty-nine thousand, seven hundred sixty-nine".