170745666 has 128 divisors (see below), whose sum is σ = 449433600. Its totient is φ = 41990400.

The previous prime is 170745529. The next prime is 170745677. The reversal of 170745666 is 666547071.

170745666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1130691 + ... + 1130841.

It is an arithmetic number, because the mean of its divisors is an integer number (3511200).

Almost surely, 2^170745666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 170745666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224716800).

170745666 is an abundant number, since it is smaller than the sum of its proper divisors (278687934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

170745666 is a wasteful number, since it uses less digits than its factorization.

170745666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304.

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 170745666 is about 13066.9685084185. The cubic root of 170745666 is about 554.7745923384.

The spelling of 170745666 in words is "one hundred seventy million, seven hundred forty-five thousand, six hundred sixty-six".