170249668 has 6 divisors (see below), whose sum is σ = 297936926. Its totient is φ = 85124832.

The previous prime is 170249663. The next prime is 170249689. The reversal of 170249668 is 866942071.

It can be written as a sum of positive squares in only one way, i.e., 122058304 + 48191364 = 11048^2 + 6942^2 .

It is a super-2 number, since 2×170249668² = 57969898908220448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (170249663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21281205 + ... + 21281212.

Almost surely, 2^170249668 is an apocalyptic number.

It is an amenable number.

170249668 is a deficient number, since it is larger than the sum of its proper divisors (127687258).

170249668 is a wasteful number, since it uses less digits than its factorization.

170249668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42562421 (or 42562419 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 170249668 is about 13047.9756284260. The cubic root of 170249668 is about 554.2368842778.

The spelling of 170249668 in words is "one hundred seventy million, two hundred forty-nine thousand, six hundred sixty-eight".