432644 has 6 divisors (see below), whose sum is σ = 757134. Its totient is φ = 216320.

The previous prime is 432637. The next prime is 432659. The reversal of 432644 is 446234.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 407044 + 25600 = 638^2 + 160^2 .

It is a congruent number.

It is an unprimeable number.

432644 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 as a sum of consecutive naturals, namely, 54077 + ... + 54084.

It is an arithmetic number, because the mean of its divisors is an integer number (126189).

2⁴³²⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

432644 is a deficient number, since it is larger than the sum of its proper divisors (324490).

432644 is a wasteful number, since it uses less digits than its factorization.

432644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108165 (or 108163 counting only the distinct ones).

The product of its digits is 2304, while the sum is 23.

The square root of 432644 is about 657.7567939596. The cubic root of 432644 is about 75.6328086557.

Adding to 432644 its reverse (446234), we get a palindrome (878878).

It can be divided in two parts, 43264 and 4, that multiplied together give a square (173056 = 416²).

The spelling of 432644 in words is "four hundred thirty-two thousand, six hundred forty-four".