170068138 has 4 divisors (see below), whose sum is σ = 255102210. Its totient is φ = 85034068.

The previous prime is 170068127. The next prime is 170068159. The reversal of 170068138 is 831860071.

170068138 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 150381169 + 19686969 = 12263^2 + 4437^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42517033 + ... + 42517036.

Almost surely, 2^170068138 is an apocalyptic number.

170068138 is a deficient number, since it is larger than the sum of its proper divisors (85034072).

170068138 is an equidigital number, since it uses as much as digits as its factorization.

170068138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85034071.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 170068138 is about 13041.0175216507. The cubic root of 170068138 is about 554.0398277961.

The spelling of 170068138 in words is "one hundred seventy million, sixty-eight thousand, one hundred thirty-eight".