876578161 has 2 divisors, whose sum is σ = 876578162. Its totient is φ = 876578160.

The previous prime is 876578117. The next prime is 876578179. The reversal of 876578161 is 161875678.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 859603761 + 16974400 = 29319^2 + 4120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-876578161 is a prime.

It is not a weakly prime, because it can be changed into another prime (876578111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 438289080 + 438289081.

It is an arithmetic number, because the mean of its divisors is an integer number (438289081).

Almost surely, 2^876578161 is an apocalyptic number.

It is an amenable number.

876578161 is a deficient number, since it is larger than the sum of its proper divisors (1).

876578161 is an equidigital number, since it uses as much as digits as its factorization.

876578161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 564480, while the sum is 49.

The square root of 876578161 is about 29607.0626878115. The cubic root of 876578161 is about 957.0402771427.

The spelling of 876578161 in words is "eight hundred seventy-six million, five hundred seventy-eight thousand, one hundred sixty-one".