6845749 has 4 divisors (see below), whose sum is σ = 6942240. Its totient is φ = 6749260.

The previous prime is 6845723. The next prime is 6845767. The reversal of 6845749 is 9475486.

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 an emirpimes, since its reverse is a distinct semiprime: 9475486 = 2 ⋅4737743.

It is not a de Polignac number, because 6845749 - 2⁵ = 6845717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6845779) 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, 48139 + ... + 48280.

It is an arithmetic number, because the mean of its divisors is an integer number (1735560).

Almost surely, 2^6845749 is an apocalyptic number.

It is an amenable number.

6845749 is a deficient number, since it is larger than the sum of its proper divisors (96491).

6845749 is an equidigital number, since it uses as much as digits as its factorization.

6845749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96490.

The product of its digits is 241920, while the sum is 43.

The square root of 6845749 is about 2616.4382278204. The cubic root of 6845749 is about 189.8775665518.

The spelling of 6845749 in words is "six million, eight hundred forty-five thousand, seven hundred forty-nine".