651432 has 16 divisors (see below), whose sum is σ = 1628640. Its totient is φ = 217136.

The previous prime is 651401. The next prime is 651437. The reversal of 651432 is 234156.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 651399 and 651408.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 651432.

It is not an unprimeable number, because it can be changed into a prime (651437) 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, 13548 + ... + 13595.

It is an arithmetic number, because the mean of its divisors is an integer number (101790).

2⁶⁵¹⁴³² is an apocalyptic number.

It is an amenable number.

651432 is an abundant number, since it is smaller than the sum of its proper divisors (977208).

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

651432 is a wasteful number, since it uses less digits than its factorization.

651432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27152 (or 27148 counting only the distinct ones).

The product of its digits is 720, while the sum is 21.

The square root of 651432 is about 807.1133749356. The cubic root of 651432 is about 86.6874769225.

Adding to 651432 its reverse (234156), we get a palindrome (885588).

The spelling of 651432 in words is "six hundred fifty-one thousand, four hundred thirty-two".