6845729 has 16 divisors (see below), whose sum is σ = 7850304. Its totient is φ = 5913600.

The previous prime is 6845723. The next prime is 6845767. The reversal of 6845729 is 9275486.

It is a de Polignac number, because none of the positive numbers 2^k-6845729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

Its product of digits (120960) is a multiple of the sum of its prime divisors (448).

It is not an unprimeable number, because it can be changed into a prime (6845723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19217 + ... + 19569.

It is an arithmetic number, because the mean of its divisors is an integer number (490644).

Almost surely, 2^6845729 is an apocalyptic number.

It is an amenable number.

6845729 is a deficient number, since it is larger than the sum of its proper divisors (1004575).

6845729 is a wasteful number, since it uses less digits than its factorization.

6845729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448.

The product of its digits is 120960, while the sum is 41.

The square root of 6845729 is about 2616.4344058279. The cubic root of 6845729 is about 189.8773816412.

It can be divided in two parts, 68457 and 29, that added together give a palindrome (68486).

The spelling of 6845729 in words is "six million, eight hundred forty-five thousand, seven hundred twenty-nine".