856341361 has 2 divisors, whose sum is σ = 856341362. Its totient is φ = 856341360.

The previous prime is 856341349. The next prime is 856341373. The reversal of 856341361 is 163143658.

It is a balanced prime because it is at equal distance from previous prime (856341349) and next prime (856341373).

It can be written as a sum of positive squares in only one way, i.e., 842798961 + 13542400 = 29031^2 + 3680^2 .

It is a cyclic number.

It is not a de Polignac number, because 856341361 - 2¹⁹ = 855817073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 856341361.

It is not a weakly prime, because it can be changed into another prime (856341341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428170680 + 428170681.

It is an arithmetic number, because the mean of its divisors is an integer number (428170681).

Almost surely, 2^856341361 is an apocalyptic number.

It is an amenable number.

856341361 is a deficient number, since it is larger than the sum of its proper divisors (1).

856341361 is an equidigital number, since it uses as much as digits as its factorization.

856341361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 37.

The square root of 856341361 is about 29263.3108345587. The cubic root of 856341361 is about 949.6180776884.

The spelling of 856341361 in words is "eight hundred fifty-six million, three hundred forty-one thousand, three hundred sixty-one".