8070857 has 2 divisors, whose sum is σ = 8070858. Its totient is φ = 8070856.

The previous prime is 8070851. The next prime is 8070859. The reversal of 8070857 is 7580708.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6869641 + 1201216 = 2621^2 + 1096^2 .

It is a cyclic number.

It is not a de Polignac number, because 8070857 - 2¹² = 8066761 is a prime.

Together with 8070859, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8070851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4035428 + 4035429.

It is an arithmetic number, because the mean of its divisors is an integer number (4035429).

Almost surely, 2^8070857 is an apocalyptic number.

It is an amenable number.

8070857 is a deficient number, since it is larger than the sum of its proper divisors (1).

8070857 is an equidigital number, since it uses as much as digits as its factorization.

8070857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15680, while the sum is 35.

The square root of 8070857 is about 2840.9253774079. The cubic root of 8070857 is about 200.5887402242.

The spelling of 8070857 in words is "eight million, seventy thousand, eight hundred fifty-seven".