6580217678 has 4 divisors (see below), whose sum is σ = 9870326520. Its totient is φ = 3290108838.

The previous prime is 6580217671. The next prime is 6580217687. The reversal of 6580217678 is 8767120856.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6580217671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1645054418 + ... + 1645054421.

It is an arithmetic number, because the mean of its divisors is an integer number (2467581630).

Almost surely, 2^6580217678 is an apocalyptic number.

6580217678 is a deficient number, since it is larger than the sum of its proper divisors (3290108842).

6580217678 is a wasteful number, since it uses less digits than its factorization.

6580217678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3290108841.

The product of its (nonzero) digits is 1128960, while the sum is 50.

The square root of 6580217678 is about 81118.5409015719. The cubic root of 6580217678 is about 1873.9014771051.

The spelling of 6580217678 in words is "six billion, five hundred eighty million, two hundred seventeen thousand, six hundred seventy-eight".