170848987 has 2 divisors, whose sum is σ = 170848988. Its totient is φ = 170848986.

The previous prime is 170848921. The next prime is 170848999. The reversal of 170848987 is 789848071.

It is a strong prime.

It is an emirp because it is prime and its reverse (789848071) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 170848987 - 2¹⁹ = 170324699 is a prime.

It is not a weakly prime, because it can be changed into another prime (170848187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85424493 + 85424494.

It is an arithmetic number, because the mean of its divisors is an integer number (85424494).

Almost surely, 2^170848987 is an apocalyptic number.

170848987 is the 7547-th hex number.

170848987 is a deficient number, since it is larger than the sum of its proper divisors (1).

170848987 is an equidigital number, since it uses as much as digits as its factorization.

170848987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 903168, while the sum is 52.

The square root of 170848987 is about 13070.9214288817. The cubic root of 170848987 is about 554.8864708400.

The spelling of 170848987 in words is "one hundred seventy million, eight hundred forty-eight thousand, nine hundred eighty-seven".