2001705170 has 8 divisors (see below), whose sum is σ = 3603069324. Its totient is φ = 800682064.

The previous prime is 2001705149. The next prime is 2001705197. The reversal of 2001705170 is 715071002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1968608161 + 33097009 = 44369^2 + 5753^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100085249 + ... + 100085268.

Almost surely, 2^2001705170 is an apocalyptic number.

2001705170 is a deficient number, since it is larger than the sum of its proper divisors (1601364154).

2001705170 is a wasteful number, since it uses less digits than its factorization.

2001705170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200170524.

The product of its (nonzero) digits is 490, while the sum is 23.

The square root of 2001705170 is about 44740.4198683919. The cubic root of 2001705170 is about 1260.2790114460.

Adding to 2001705170 its reverse (715071002), we get a palindrome (2716776172).

The spelling of 2001705170 in words is "two billion, one million, seven hundred five thousand, one hundred seventy".