170000945 has 8 divisors (see below), whose sum is σ = 207850536. Its totient is φ = 133434496.

The previous prime is 170000921. The next prime is 170000951. The reversal of 170000945 is 549000071.

It can be written as a sum of positive squares in 4 ways, for example, as 11669056 + 158331889 = 3416^2 + 12583^2 .

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

It is not a de Polignac number, because 170000945 - 2¹⁸ = 169738801 is a prime.

It is a Duffinian number.

170000945 is a modest number, since divided by 945 gives 170 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320492 + ... + 321021.

It is an arithmetic number, because the mean of its divisors is an integer number (25981317).

Almost surely, 2^170000945 is an apocalyptic number.

It is an amenable number.

170000945 is a deficient number, since it is larger than the sum of its proper divisors (37849591).

170000945 is an equidigital number, since it uses as much as digits as its factorization.

170000945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641571.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 170000945 is about 13038.4410494507. The cubic root of 170000945 is about 553.9668521396.

The spelling of 170000945 in words is "one hundred seventy million, nine hundred forty-five", and thus it is an aban number.