6856479 has 24 divisors (see below), whose sum is σ = 11586432. Its totient is φ = 3825360.

The previous prime is 6856477. The next prime is 6856483. The reversal of 6856479 is 9746586.

It is not a de Polignac number, because 6856479 - 2¹ = 6856477 is a prime.

It is a super-2 number, since 2×6856479² = 94022608554882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6856477) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1444 + ... + 3974.

It is an arithmetic number, because the mean of its divisors is an integer number (482768).

Almost surely, 2^6856479 is an apocalyptic number.

6856479 is a deficient number, since it is larger than the sum of its proper divisors (4729953).

6856479 is a wasteful number, since it uses less digits than its factorization.

6856479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2587 (or 2584 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 6856479 is about 2618.4879224468. The cubic root of 6856479 is about 189.9767192158.

The spelling of 6856479 in words is "six million, eight hundred fifty-six thousand, four hundred seventy-nine".