87204113 has 2 divisors, whose sum is σ = 87204114. Its totient is φ = 87204112.

The previous prime is 87204097. The next prime is 87204119. The reversal of 87204113 is 31140278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48553024 + 38651089 = 6968^2 + 6217^2 .

It is a cyclic number.

It is not a de Polignac number, because 87204113 - 2⁴ = 87204097 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87204119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43602056 + 43602057.

It is an arithmetic number, because the mean of its divisors is an integer number (43602057).

Almost surely, 2^87204113 is an apocalyptic number.

It is an amenable number.

87204113 is a deficient number, since it is larger than the sum of its proper divisors (1).

87204113 is an equidigital number, since it uses as much as digits as its factorization.

87204113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 87204113 is about 9338.3142482999. The cubic root of 87204113 is about 443.4510181226.

The spelling of 87204113 in words is "eighty-seven million, two hundred four thousand, one hundred thirteen".