170749 has 2 divisors, whose sum is σ = 170750. Its totient is φ = 170748.

The previous prime is 170741. The next prime is 170759. The reversal of 170749 is 947071.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164025 + 6724 = 405^2 + 82^2 .

It is a cyclic number.

It is not a de Polignac number, because 170749 - 2³ = 170741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (170741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85374 + 85375.

It is an arithmetic number, because the mean of its divisors is an integer number (85375).

2¹⁷⁰⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

170749 is a deficient number, since it is larger than the sum of its proper divisors (1).

170749 is an equidigital number, since it uses as much as digits as its factorization.

170749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 170749 is about 413.2178602142. The cubic root of 170749 is about 55.4778203180.

It can be divided in two parts, 170 and 749, that added together give a palindrome (919).

The spelling of 170749 in words is "one hundred seventy thousand, seven hundred forty-nine".