170485387 has 2 divisors, whose sum is σ = 170485388. Its totient is φ = 170485386.

The previous prime is 170485373. The next prime is 170485391. The reversal of 170485387 is 783584071.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-170485387 is a prime.

It is not a weakly prime, because it can be changed into another prime (170485327) 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, 85242693 + 85242694.

It is an arithmetic number, because the mean of its divisors is an integer number (85242694).

Almost surely, 2^170485387 is an apocalyptic number.

170485387 is a deficient number, since it is larger than the sum of its proper divisors (1).

170485387 is an equidigital number, since it uses as much as digits as its factorization.

170485387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 170485387 is about 13057.0052845206. The cubic root of 170485387 is about 554.4925556839.

The spelling of 170485387 in words is "one hundred seventy million, four hundred eighty-five thousand, three hundred eighty-seven".