6479891 has 8 divisors (see below), whose sum is σ = 7143024. Its totient is φ = 5829120.

The previous prime is 6479831. The next prime is 6479897. The reversal of 6479891 is 1989746.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6479891 - 2⁶ = 6479827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6479897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1970 + ... + 4103.

It is an arithmetic number, because the mean of its divisors is an integer number (892878).

Almost surely, 2^6479891 is an apocalyptic number.

6479891 is a deficient number, since it is larger than the sum of its proper divisors (663133).

6479891 is a wasteful number, since it uses less digits than its factorization.

6479891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6181.

The product of its digits is 108864, while the sum is 44.

The square root of 6479891 is about 2545.5630025596. The cubic root of 6479891 is about 186.4329050170.

The spelling of 6479891 in words is "six million, four hundred seventy-nine thousand, eight hundred ninety-one".