651232 has 24 divisors (see below), whose sum is σ = 1312416. Its totient is φ = 317952.

The previous prime is 651223. The next prime is 651239. The reversal of 651232 is 232156.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1288 + ... + 1720.

It is an arithmetic number, because the mean of its divisors is an integer number (54684).

2⁶⁵¹²³² 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 651232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (656208).

651232 is an abundant number, since it is smaller than the sum of its proper divisors (661184).

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

651232 is a wasteful number, since it uses less digits than its factorization.

651232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490 (or 482 counting only the distinct ones).

The product of its digits is 360, while the sum is 19.

The square root of 651232 is about 806.9894670936. The cubic root of 651232 is about 86.6786045357.

Adding to 651232 its reverse (232156), we get a palindrome (883388).

The spelling of 651232 in words is "six hundred fifty-one thousand, two hundred thirty-two".