6500976857 has 2 divisors, whose sum is σ = 6500976858. Its totient is φ = 6500976856.

The previous prime is 6500976803. The next prime is 6500976899. The reversal of 6500976857 is 7586790056.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3909250576 + 2591726281 = 62524^2 + 50909^2 .

It is a cyclic number.

It is not a de Polignac number, because 6500976857 - 2⁶ = 6500976793 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6500976799 and 6500976808.

It is not a weakly prime, because it can be changed into another prime (6500975857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3250488428 + 3250488429.

It is an arithmetic number, because the mean of its divisors is an integer number (3250488429).

Almost surely, 2^6500976857 is an apocalyptic number.

It is an amenable number.

6500976857 is a deficient number, since it is larger than the sum of its proper divisors (1).

6500976857 is an equidigital number, since it uses as much as digits as its factorization.

6500976857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3175200, while the sum is 53.

The square root of 6500976857 is about 80628.6354653234. The cubic root of 6500976857 is about 1866.3490642295.

The spelling of 6500976857 in words is "six billion, five hundred million, nine hundred seventy-six thousand, eight hundred fifty-seven".