86535961 has 2 divisors, whose sum is σ = 86535962. Its totient is φ = 86535960.

The previous prime is 86535923. The next prime is 86536019. The reversal of 86535961 is 16953568.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83539600 + 2996361 = 9140^2 + 1731^2 .

It is a cyclic number.

It is not a de Polignac number, because 86535961 - 2¹¹ = 86533913 is a prime.

It is not a weakly prime, because it can be changed into another prime (86535161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43267980 + 43267981.

It is an arithmetic number, because the mean of its divisors is an integer number (43267981).

Almost surely, 2^86535961 is an apocalyptic number.

It is an amenable number.

86535961 is a deficient number, since it is larger than the sum of its proper divisors (1).

86535961 is an equidigital number, since it uses as much as digits as its factorization.

86535961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 43.

The square root of 86535961 is about 9302.4706933158. The cubic root of 86535961 is about 442.3155493283.

The spelling of 86535961 in words is "eighty-six million, five hundred thirty-five thousand, nine hundred sixty-one".