170978023 has 2 divisors, whose sum is σ = 170978024. Its totient is φ = 170978022.

The previous prime is 170977987. The next prime is 170978039. The reversal of 170978023 is 320879071.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 170978023 - 2⁹ = 170977511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (170978063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85489011 + 85489012.

It is an arithmetic number, because the mean of its divisors is an integer number (85489012).

Almost surely, 2^170978023 is an apocalyptic number.

170978023 is a deficient number, since it is larger than the sum of its proper divisors (1).

170978023 is an equidigital number, since it uses as much as digits as its factorization.

170978023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 170978023 is about 13075.8564920238. The cubic root of 170978023 is about 555.0261308477.

The spelling of 170978023 in words is "one hundred seventy million, nine hundred seventy-eight thousand, twenty-three".