432621 has 30 divisors (see below), whose sum is σ = 758670. Its totient is φ = 244944.

The previous prime is 432613. The next prime is 432631. The reversal of 432621 is 126234.

It is a happy number.

432621 is a `hidden beast` number, since 43 + 2 + 621 = 666.

It can be written as a sum of positive squares in only one way, i.e., 396900 + 35721 = 630^2 + 189^2 .

It is not a de Polignac number, because 432621 - 2³ = 432613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 432594 and 432603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (432631) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 3915 + ... + 4023.

It is an arithmetic number, because the mean of its divisors is an integer number (25289).

2⁴³²⁶²¹ is an apocalyptic number.

It is an amenable number.

432621 is a deficient number, since it is larger than the sum of its proper divisors (326049).

432621 is a wasteful number, since it uses less digits than its factorization.

432621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 119 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 432621 is about 657.7393100614. The cubic root of 432621 is about 75.6314683810.

Adding to 432621 its reverse (126234), we get a palindrome (558855).

The spelling of 432621 in words is "four hundred thirty-two thousand, six hundred twenty-one".