6845605 has 32 divisors (see below), whose sum is σ = 9757440. Its totient is φ = 4561920.

The previous prime is 6845563. The next prime is 6845609. The reversal of 6845605 is 5065486.

It is not a de Polignac number, because 6845605 - 2¹⁵ = 6812837 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6845609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28285 + ... + 28525.

It is an arithmetic number, because the mean of its divisors is an integer number (304920).

Almost surely, 2^6845605 is an apocalyptic number.

6845605 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6845605 is a deficient number, since it is larger than the sum of its proper divisors (2911835).

6845605 is a wasteful number, since it uses less digits than its factorization.

6845605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 6845605 is about 2616.4107093497. The cubic root of 6845605 is about 189.8762351874.

It can be divided in two parts, 6845 and 605, that multiplied together give a square (4141225 = 2035²).

The spelling of 6845605 in words is "six million, eight hundred forty-five thousand, six hundred five".