87610217 has 2 divisors, whose sum is σ = 87610218. Its totient is φ = 87610216.

The previous prime is 87610207. The next prime is 87610261. The reversal of 87610217 is 71201678.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78783376 + 8826841 = 8876^2 + 2971^2 .

It is a cyclic number.

It is not a de Polignac number, because 87610217 - 2⁸ = 87609961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87610207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43805108 + 43805109.

It is an arithmetic number, because the mean of its divisors is an integer number (43805109).

Almost surely, 2^87610217 is an apocalyptic number.

It is an amenable number.

87610217 is a deficient number, since it is larger than the sum of its proper divisors (1).

87610217 is an equidigital number, since it uses as much as digits as its factorization.

87610217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 87610217 is about 9360.0329593437. The cubic root of 87610217 is about 444.1383266890.

The spelling of 87610217 in words is "eighty-seven million, six hundred ten thousand, two hundred seventeen".