170908946 has 16 divisors (see below), whose sum is σ = 280612248. Its totient is φ = 77587200.

The previous prime is 170908943. The next prime is 170908963. The reversal of 170908946 is 649809071.

It can be written as a sum of positive squares in 4 ways, for example, as 57592921 + 113316025 = 7589^2 + 10645^2 .

It is a junction number, because it is equal to n+sod(n) for n = 170908897 and 170908906.

It is not an unprimeable number, because it can be changed into a prime (170908943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52295 + ... + 55466.

Almost surely, 2^170908946 is an apocalyptic number.

170908946 is a deficient number, since it is larger than the sum of its proper divisors (109703302).

170908946 is a wasteful number, since it uses less digits than its factorization.

170908946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107837.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 170908946 is about 13073.2148303315. The cubic root of 170908946 is about 554.9513752276.

The spelling of 170908946 in words is "one hundred seventy million, nine hundred eight thousand, nine hundred forty-six".