6479640006 has 16 divisors (see below), whose sum is σ = 14810605824. Its totient is φ = 1851325704.

The previous prime is 6479640001. The next prime is 6479640023. The reversal of 6479640006 is 6000469746.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 154277143 = 6479640006 / (6 + 4 + 7 + 9 + 6 + 4 + 0 + 0 + 0 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 6479640006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6479640001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77138530 + ... + 77138613.

It is an arithmetic number, because the mean of its divisors is an integer number (925662864).

Almost surely, 2^6479640006 is an apocalyptic number.

6479640006 is an abundant number, since it is smaller than the sum of its proper divisors (8330965818).

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

6479640006 is a wasteful number, since it uses less digits than its factorization.

6479640006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154277155.

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 6479640006 is about 80496.2111282264. The cubic root of 6479640006 is about 1864.3049787028.

The spelling of 6479640006 in words is "six billion, four hundred seventy-nine million, six hundred forty thousand, six".