856061 has 2 divisors, whose sum is σ = 856062. Its totient is φ = 856060.

The previous prime is 856057. The next prime is 856073. The reversal of 856061 is 160658.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 630436 + 225625 = 794^2 + 475^2 .

It is a cyclic number.

It is not a de Polignac number, because 856061 - 2² = 856057 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 856061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (856021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428030 + 428031.

It is an arithmetic number, because the mean of its divisors is an integer number (428031).

2⁸⁵⁶⁰⁶¹ is an apocalyptic number.

It is an amenable number.

856061 is a deficient number, since it is larger than the sum of its proper divisors (1).

856061 is an equidigital number, since it uses as much as digits as its factorization.

856061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 856061 is about 925.2356456601. The cubic root of 856061 is about 94.9514433298.

The spelling of 856061 in words is "eight hundred fifty-six thousand, sixty-one".