643192 has 16 divisors (see below), whose sum is σ = 1315800. Its totient is φ = 292320.

The previous prime is 643187. The next prime is 643199. The reversal of 643192 is 291346.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643199) by changing a digit.

643192 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3567 + ... + 3742.

2⁶⁴³¹⁹² is an apocalyptic number.

It is an amenable number.

643192 is an abundant number, since it is smaller than the sum of its proper divisors (672608).

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

643192 is a wasteful number, since it uses less digits than its factorization.

643192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7326 (or 7322 counting only the distinct ones).

The product of its digits is 1296, while the sum is 25.

The square root of 643192 is about 801.9925186683. The cubic root of 643192 is about 86.3204199797.

The spelling of 643192 in words is "six hundred forty-three thousand, one hundred ninety-two".