659858161 has 2 divisors, whose sum is σ = 659858162. Its totient is φ = 659858160.

The previous prime is 659858131. The next prime is 659858191. The reversal of 659858161 is 161858956.

659858161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (659858131) and next prime (659858191).

It can be written as a sum of positive squares in only one way, i.e., 503733136 + 156125025 = 22444^2 + 12495^2 .

It is a cyclic number.

It is not a de Polignac number, because 659858161 - 2¹⁵ = 659825393 is a prime.

It is not a weakly prime, because it can be changed into another prime (659858131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329929080 + 329929081.

It is an arithmetic number, because the mean of its divisors is an integer number (329929081).

Almost surely, 2^659858161 is an apocalyptic number.

It is an amenable number.

659858161 is a deficient number, since it is larger than the sum of its proper divisors (1).

659858161 is an equidigital number, since it uses as much as digits as its factorization.

659858161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 518400, while the sum is 49.

The square root of 659858161 is about 25687.7044712057. The cubic root of 659858161 is about 870.5963942604.

The spelling of 659858161 in words is "six hundred fifty-nine million, eight hundred fifty-eight thousand, one hundred sixty-one".