643588 has 12 divisors (see below), whose sum is σ = 1228752. Its totient is φ = 292520.

The previous prime is 643583. The next prime is 643589. The reversal of 643588 is 885346.

It is not an unprimeable number, because it can be changed into a prime (643583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7270 + ... + 7357.

It is an arithmetic number, because the mean of its divisors is an integer number (102396).

2⁶⁴³⁵⁸⁸ is an apocalyptic number.

It is an amenable number.

643588 is a deficient number, since it is larger than the sum of its proper divisors (585164).

643588 is a wasteful number, since it uses less digits than its factorization.

643588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14642 (or 14640 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 643588 is about 802.2393657756. The cubic root of 643588 is about 86.3381315772.

The spelling of 643588 in words is "six hundred forty-three thousand, five hundred eighty-eight".