6479680 has 28 divisors (see below), whose sum is σ = 15430500. Its totient is φ = 2591744.

The previous prime is 6479663. The next prime is 6479701. The reversal of 6479680 is 869746.

It can be written as a sum of positive squares in 2 ways, for example, as 2119936 + 4359744 = 1456^2 + 2088^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a d-powerful number, because it can be written as 6³ + 4³ + 7⁵ + 9⁷ + 6⁸ + 8 + 0 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 9805 + ... + 10444.

Almost surely, 2^6479680 is an apocalyptic number.

It is an amenable number.

6479680 is an abundant number, since it is smaller than the sum of its proper divisors (8950820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6479680 is a wasteful number, since it uses less digits than its factorization.

6479680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20266 (or 20256 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 6479680 is about 2545.5215575595. The cubic root of 6479680 is about 186.4308814351.

The spelling of 6479680 in words is "six million, four hundred seventy-nine thousand, six hundred eighty".