6857445 has 16 divisors (see below), whose sum is σ = 12539520. Its totient is φ = 3134784.

The previous prime is 6857429. The next prime is 6857449. The reversal of 6857445 is 5447586.

It is not a de Polignac number, because 6857445 - 2⁴ = 6857429 is a prime.

6857445 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6857449) 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 15 ways as a sum of consecutive naturals, for example, 32550 + ... + 32759.

It is an arithmetic number, because the mean of its divisors is an integer number (783720).

Almost surely, 2^6857445 is an apocalyptic number.

It is an amenable number.

6857445 is a deficient number, since it is larger than the sum of its proper divisors (5682075).

6857445 is a wasteful number, since it uses less digits than its factorization.

6857445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65324.

The product of its digits is 134400, while the sum is 39.

The square root of 6857445 is about 2618.6723735511. The cubic root of 6857445 is about 189.9856406507.

The spelling of 6857445 in words is "six million, eight hundred fifty-seven thousand, four hundred forty-five".