643362 has 8 divisors (see below), whose sum is σ = 1286736. Its totient is φ = 214452.

The previous prime is 643303. The next prime is 643369. The reversal of 643362 is 263346.

It is a sphenic number, since it is the product of 3 distinct primes.

643362 is an admirable number.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 643362.

It is not an unprimeable number, because it can be changed into a prime (643369) 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, 53608 + ... + 53619.

It is an arithmetic number, because the mean of its divisors is an integer number (160842).

2⁶⁴³³⁶² is an apocalyptic number.

643362 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

643362 is a wasteful number, since it uses less digits than its factorization.

643362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107232.

The product of its digits is 2592, while the sum is 24.

The square root of 643362 is about 802.0984976921. The cubic root of 643362 is about 86.3280243336.

The spelling of 643362 in words is "six hundred forty-three thousand, three hundred sixty-two".