161744 has 20 divisors (see below), whose sum is σ = 342240. Its totient is φ = 73440.

The previous prime is 161743. The next prime is 161753. The reversal of 161744 is 447161.

It is a super-2 number, since 2×161744² = 52322243072, which contains 22 as substring.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284 + ... + 635.

It is an arithmetic number, because the mean of its divisors is an integer number (17112).

2¹⁶¹⁷⁴⁴ is an apocalyptic number.

It is an amenable number.

161744 is an abundant number, since it is smaller than the sum of its proper divisors (180496).

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

161744 is a wasteful number, since it uses less digits than its factorization.

161744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938 (or 932 counting only the distinct ones).

The product of its digits is 672, while the sum is 23.

The square root of 161744 is about 402.1740916568. The cubic root of 161744 is about 54.4848876540.

It can be divided in two parts, 1617 and 44, that added together give a palindrome (1661).

The spelling of 161744 in words is "one hundred sixty-one thousand, seven hundred forty-four".