857622061 has 2 divisors, whose sum is σ = 857622062. Its totient is φ = 857622060.

The previous prime is 857622049. The next prime is 857622083. The reversal of 857622061 is 160226758.

It is a happy number.

857622061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 641355625 + 216266436 = 25325^2 + 14706^2 .

It is a cyclic number.

It is not a de Polignac number, because 857622061 - 2¹¹ = 857620013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 857622061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (857622011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428811030 + 428811031.

It is an arithmetic number, because the mean of its divisors is an integer number (428811031).

Almost surely, 2^857622061 is an apocalyptic number.

It is an amenable number.

857622061 is a deficient number, since it is larger than the sum of its proper divisors (1).

857622061 is an equidigital number, since it uses as much as digits as its factorization.

857622061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 857622061 is about 29285.1850088061. The cubic root of 857622061 is about 950.0912418367.

The spelling of 857622061 in words is "eight hundred fifty-seven million, six hundred twenty-two thousand, sixty-one".