343644 has 24 divisors (see below), whose sum is σ = 916608. Its totient is φ = 98160.

The previous prime is 343639. The next prime is 343649. The reversal of 343644 is 446343.

It is an interprime number because it is at equal distance from previous prime (343639) and next prime (343649).

It is a nude number because it is divisible by every one of its digits.

It is a d-powerful number, because it can be written as 3⁵ + 4³ + 6⁷ + 3¹⁰ + 4⁴ + 4⁶ .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 343644.

It is not an unprimeable number, because it can be changed into a prime (343649) by changing a digit.

343644 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1962 + ... + 2129.

It is an arithmetic number, because the mean of its divisors is an integer number (38192).

2³⁴³⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

343644 is an abundant number, since it is smaller than the sum of its proper divisors (572964).

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

343644 is a wasteful number, since it uses less digits than its factorization.

343644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4105 (or 4103 counting only the distinct ones).

The product of its digits is 3456, while the sum is 24.

The square root of 343644 is about 586.2115659043. The cubic root of 343644 is about 70.0437821342.

Adding to 343644 its reverse (446343), we get a palindrome (789987).

The spelling of 343644 in words is "three hundred forty-three thousand, six hundred forty-four".