6479644078 has 8 divisors (see below), whose sum is σ = 10291199472. Its totient is φ = 3049244256.

The previous prime is 6479643997. The next prime is 6479644097. The reversal of 6479644078 is 8704469746.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95288850 + ... + 95288917.

It is an arithmetic number, because the mean of its divisors is an integer number (1286399934).

Almost surely, 2^6479644078 is an apocalyptic number.

6479644078 is a deficient number, since it is larger than the sum of its proper divisors (3811555394).

6479644078 is a wasteful number, since it uses less digits than its factorization.

6479644078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190577786.

The product of its (nonzero) digits is 8128512, while the sum is 55.

The square root of 6479644078 is about 80496.2364213384. The cubic root of 6479644078 is about 1864.3053692311.

The spelling of 6479644078 in words is "six billion, four hundred seventy-nine million, six hundred forty-four thousand, seventy-eight".