87657113 has 2 divisors, whose sum is σ = 87657114. Its totient is φ = 87657112.

The previous prime is 87657109. The next prime is 87657133. The reversal of 87657113 is 31175678.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54051904 + 33605209 = 7352^2 + 5797^2 .

It is a cyclic number.

It is not a de Polignac number, because 87657113 - 2² = 87657109 is a prime.

It is a super-3 number, since 3×87657113³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (87657133) 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, 43828556 + 43828557.

It is an arithmetic number, because the mean of its divisors is an integer number (43828557).

Almost surely, 2^87657113 is an apocalyptic number.

It is an amenable number.

87657113 is a deficient number, since it is larger than the sum of its proper divisors (1).

87657113 is an equidigital number, since it uses as much as digits as its factorization.

87657113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 38.

The square root of 87657113 is about 9362.5377435821. The cubic root of 87657113 is about 444.2175586799.

The spelling of 87657113 in words is "eighty-seven million, six hundred fifty-seven thousand, one hundred thirteen".