857228627 has 2 divisors, whose sum is σ = 857228628. Its totient is φ = 857228626.

The previous prime is 857228611. The next prime is 857228677. The reversal of 857228627 is 726822758.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 857228627 - 2⁴ = 857228611 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (857228677) 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, 428614313 + 428614314.

It is an arithmetic number, because the mean of its divisors is an integer number (428614314).

Almost surely, 2^857228627 is an apocalyptic number.

857228627 is a deficient number, since it is larger than the sum of its proper divisors (1).

857228627 is an equidigital number, since it uses as much as digits as its factorization.

857228627 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 752640, while the sum is 47.

The square root of 857228627 is about 29278.4669509864. The cubic root of 857228627 is about 949.9459348733.

It can be divided in two parts, 85722 and 8627, that added together give a palindrome (94349).

The spelling of 857228627 in words is "eight hundred fifty-seven million, two hundred twenty-eight thousand, six hundred twenty-seven".