346644 has 18 divisors (see below), whose sum is σ = 876330. Its totient is φ = 115536.

The previous prime is 346639. The next prime is 346649. The reversal of 346644 is 446643.

It is a happy number.

346644 is nontrivially palindromic in base 13.

It is an interprime number because it is at equal distance from previous prime (346639) and next prime (346649).

It can be written as a sum of positive squares in only one way, i.e., 345744 + 900 = 588^2 + 30^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (346649) by changing a digit.

346644 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 (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4779 + ... + 4850.

It is an arithmetic number, because the mean of its divisors is an integer number (48685).

2³⁴⁶⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

346644 is an abundant number, since it is smaller than the sum of its proper divisors (529686).

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

346644 is a wasteful number, since it uses less digits than its factorization.

346644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9639 (or 9634 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 346644 is about 588.7648087310. The cubic root of 346644 is about 70.2470184438.

Subtracting 346644 from its reverse (446643), we obtain a palindrome (99999).

It can be divided in two parts, 346 and 644, that added together give a triangular number (990 = T₄₄).

The spelling of 346644 in words is "three hundred forty-six thousand, six hundred forty-four".