641732 has 48 divisors (see below), whose sum is σ = 1448832. Its totient is φ = 241920.

The previous prime is 641713. The next prime is 641747. The reversal of 641732 is 237146.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 641698 and 641707.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14903 + ... + 14945.

It is an arithmetic number, because the mean of its divisors is an integer number (30184).

2⁶⁴¹⁷³² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (724416).

641732 is an abundant number, since it is smaller than the sum of its proper divisors (807100).

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

641732 is a wasteful number, since it uses less digits than its factorization.

641732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108 (or 106 counting only the distinct ones).

The product of its digits is 1008, while the sum is 23.

The square root of 641732 is about 801.0817686104. The cubic root of 641732 is about 86.2550567644.

Adding to 641732 its reverse (237146), we get a palindrome (878878).

The spelling of 641732 in words is "six hundred forty-one thousand, seven hundred thirty-two".