8257060813 has 2 divisors, whose sum is σ = 8257060814. Its totient is φ = 8257060812.

The previous prime is 8257060811. The next prime is 8257060841. The reversal of 8257060813 is 3180607528.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6783499044 + 1473561769 = 82362^2 + 38387^2 .

It is a cyclic number.

It is not a de Polignac number, because 8257060813 - 2¹ = 8257060811 is a prime.

Together with 8257060811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8257060811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4128530406 + 4128530407.

It is an arithmetic number, because the mean of its divisors is an integer number (4128530407).

Almost surely, 2^8257060813 is an apocalyptic number.

It is an amenable number.

8257060813 is a deficient number, since it is larger than the sum of its proper divisors (1).

8257060813 is an equidigital number, since it uses as much as digits as its factorization.

8257060813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 8257060813 is about 90868.3708063482. The cubic root of 8257060813 is about 2021.1962992704.

The spelling of 8257060813 in words is "eight billion, two hundred fifty-seven million, sixty thousand, eight hundred thirteen".