170074745 has 4 divisors (see below), whose sum is σ = 204089700. Its totient is φ = 136059792.

The previous prime is 170074739. The next prime is 170074747. The reversal of 170074745 is 547470071.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 547470071 = 229 ⋅2390699.

It can be written as a sum of positive squares in 2 ways, for example, as 44903401 + 125171344 = 6701^2 + 11188^2 .

It is a cyclic number.

It is not a de Polignac number, because 170074745 - 2¹⁶ = 170009209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (170074747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17007470 + ... + 17007479.

It is an arithmetic number, because the mean of its divisors is an integer number (51022425).

Almost surely, 2^170074745 is an apocalyptic number.

It is an amenable number.

170074745 is a deficient number, since it is larger than the sum of its proper divisors (34014955).

170074745 is an equidigital number, since it uses as much as digits as its factorization.

170074745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34014954.

The product of its (nonzero) digits is 27440, while the sum is 35.

The square root of 170074745 is about 13041.2708353136. The cubic root of 170074745 is about 554.0470023591.

The spelling of 170074745 in words is "one hundred seventy million, seventy-four thousand, seven hundred forty-five".