6479738659 has 2 divisors, whose sum is σ = 6479738660. Its totient is φ = 6479738658.

The previous prime is 6479738653. The next prime is 6479738669. The reversal of 6479738659 is 9568379746.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6479738659 - 2⁹ = 6479738147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6479738659.

It is not a weakly prime, because it can be changed into another prime (6479738653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3239869329 + 3239869330.

It is an arithmetic number, because the mean of its divisors is an integer number (3239869330).

Almost surely, 2^6479738659 is an apocalyptic number.

6479738659 is a deficient number, since it is larger than the sum of its proper divisors (1).

6479738659 is an equidigital number, since it uses as much as digits as its factorization.

6479738659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68584320, while the sum is 64.

The square root of 6479738659 is about 80496.8239062884. The cubic root of 6479738659 is about 1864.3144400486.

The spelling of 6479738659 in words is "six billion, four hundred seventy-nine million, seven hundred thirty-eight thousand, six hundred fifty-nine".