87660113 has 2 divisors, whose sum is σ = 87660114. Its totient is φ = 87660112.

The previous prime is 87660077. The next prime is 87660119. The reversal of 87660113 is 31106678.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51093904 + 36566209 = 7148^2 + 6047^2 .

It is a cyclic number.

It is not a de Polignac number, because 87660113 - 2⁶ = 87660049 is a prime.

It is a super-2 number, since 2×87660113² = 15368590822345538, which contains 22 as substring.

It is a Chen prime.

It is equal to p_5089244 and since 87660113 and 5089244 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87660113.

It is not a weakly prime, because it can be changed into another prime (87660119) 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, 43830056 + 43830057.

It is an arithmetic number, because the mean of its divisors is an integer number (43830057).

Almost surely, 2^87660113 is an apocalyptic number.

It is an amenable number.

87660113 is a deficient number, since it is larger than the sum of its proper divisors (1).

87660113 is an equidigital number, since it uses as much as digits as its factorization.

87660113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 87660113 is about 9362.6979551836. The cubic root of 87660113 is about 444.2226262948. Note that the first 3 decimals are identical.

The spelling of 87660113 in words is "eighty-seven million, six hundred sixty thousand, one hundred thirteen".