86970617 has 2 divisors, whose sum is σ = 86970618. Its totient is φ = 86970616.

The previous prime is 86970571. The next prime is 86970629. The reversal of 86970617 is 71607968.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69822736 + 17147881 = 8356^2 + 4141^2 .

It is a cyclic number.

It is not a de Polignac number, because 86970617 - 2⁸ = 86970361 is a prime.

It is not a weakly prime, because it can be changed into another prime (86970647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43485308 + 43485309.

It is an arithmetic number, because the mean of its divisors is an integer number (43485309).

Almost surely, 2^86970617 is an apocalyptic number.

It is an amenable number.

86970617 is a deficient number, since it is larger than the sum of its proper divisors (1).

86970617 is an equidigital number, since it uses as much as digits as its factorization.

86970617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 86970617 is about 9325.8038259444. The cubic root of 86970617 is about 443.0548724634.

The spelling of 86970617 in words is "eighty-six million, nine hundred seventy thousand, six hundred seventeen".