169608745 has 16 divisors (see below), whose sum is σ = 219574800. Its totient is φ = 125292544.

The previous prime is 169608743. The next prime is 169608749. The reversal of 169608745 is 547806961.

It can be written as a sum of positive squares in 8 ways, for example, as 36252441 + 133356304 = 6021^2 + 11548^2 .

It is a cyclic number.

It is not a de Polignac number, because 169608745 - 2¹ = 169608743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 169608695 and 169608704.

It is not an unprimeable number, because it can be changed into a prime (169608743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14320 + ... + 23329.

It is an arithmetic number, because the mean of its divisors is an integer number (13723425).

Almost surely, 2^169608745 is an apocalyptic number.

It is an amenable number.

169608745 is a deficient number, since it is larger than the sum of its proper divisors (49966055).

169608745 is a wasteful number, since it uses less digits than its factorization.

169608745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37724.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 169608745 is about 13023.3922232266. The cubic root of 169608745 is about 553.5405151084.

The spelling of 169608745 in words is "one hundred sixty-nine million, six hundred eight thousand, seven hundred forty-five".