170068421 has 2 divisors, whose sum is σ = 170068422. Its totient is φ = 170068420.

The previous prime is 170068399. The next prime is 170068429. The reversal of 170068421 is 124860071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170015521 + 52900 = 13039^2 + 230^2 .

It is a cyclic number.

It is not a de Polignac number, because 170068421 - 2¹⁸ = 169806277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (170068429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85034210 + 85034211.

It is an arithmetic number, because the mean of its divisors is an integer number (85034211).

Almost surely, 2^170068421 is an apocalyptic number.

It is an amenable number.

170068421 is a deficient number, since it is larger than the sum of its proper divisors (1).

170068421 is an equidigital number, since it uses as much as digits as its factorization.

170068421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 170068421 is about 13041.0283720265. The cubic root of 170068421 is about 554.0401351105.

The spelling of 170068421 in words is "one hundred seventy million, sixty-eight thousand, four hundred twenty-one".