6479857 has 4 divisors (see below), whose sum is σ = 6544116. Its totient is φ = 6415600.

The previous prime is 6479831. The next prime is 6479897. The reversal of 6479857 is 7589746.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6130576 + 349281 = 2476^2 + 591^2 .

It is a cyclic number.

It is not a de Polignac number, because 6479857 - 2⁷ = 6479729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6479807) 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, 31978 + ... + 32179.

It is an arithmetic number, because the mean of its divisors is an integer number (1636029).

Almost surely, 2^6479857 is an apocalyptic number.

It is an amenable number.

6479857 is a deficient number, since it is larger than the sum of its proper divisors (64259).

6479857 is a wasteful number, since it uses less digits than its factorization.

6479857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64258.

The product of its digits is 423360, while the sum is 46.

The square root of 6479857 is about 2545.5563242639. The cubic root of 6479857 is about 186.4325789451.

The spelling of 6479857 in words is "six million, four hundred seventy-nine thousand, eight hundred fifty-seven".