6843749 has 4 divisors (see below), whose sum is σ = 7465920. Its totient is φ = 6221580.

The previous prime is 6843709. The next prime is 6843757. The reversal of 6843749 is 9473486.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6843749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6843709) 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, 311069 + ... + 311090.

It is an arithmetic number, because the mean of its divisors is an integer number (1866480).

Almost surely, 2^6843749 is an apocalyptic number.

It is an amenable number.

6843749 is a deficient number, since it is larger than the sum of its proper divisors (622171).

6843749 is a wasteful number, since it uses less digits than its factorization.

6843749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622170.

The product of its digits is 145152, while the sum is 41.

The square root of 6843749 is about 2616.0560009296. The cubic root of 6843749 is about 189.8590737070.

It can be divided in two parts, 68437 and 49, that added together give a palindrome (68486).

The spelling of 6843749 in words is "six million, eight hundred forty-three thousand, seven hundred forty-nine".