8628857 has 2 divisors, whose sum is σ = 8628858. Its totient is φ = 8628856.

The previous prime is 8628847. The next prime is 8628859. The reversal of 8628857 is 7588268.

8628857 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5456896 + 3171961 = 2336^2 + 1781^2 .

It is a cyclic number.

It is not a de Polignac number, because 8628857 - 2⁸ = 8628601 is a prime.

Together with 8628859, 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 (8628859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4314428 + 4314429.

It is an arithmetic number, because the mean of its divisors is an integer number (4314429).

Almost surely, 2^8628857 is an apocalyptic number.

It is an amenable number.

8628857 is a deficient number, since it is larger than the sum of its proper divisors (1).

8628857 is an equidigital number, since it uses as much as digits as its factorization.

8628857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 215040, while the sum is 44.

The square root of 8628857 is about 2937.4916170093. The cubic root of 8628857 is about 205.1088614750.

The spelling of 8628857 in words is "eight million, six hundred twenty-eight thousand, eight hundred fifty-seven".