643572213 has 8 divisors (see below), whose sum is σ = 908572608. Its totient is φ = 403809984.

The previous prime is 643572197. The next prime is 643572229. The reversal of 643572213 is 312275346.

643572213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (643572197) and next prime (643572229).

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

It is not a de Polignac number, because 643572213 - 2⁴ = 643572197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643522213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6309481 + ... + 6309582.

It is an arithmetic number, because the mean of its divisors is an integer number (113571576).

Almost surely, 2^643572213 is an apocalyptic number.

It is an amenable number.

643572213 is a deficient number, since it is larger than the sum of its proper divisors (265000395).

643572213 is a wasteful number, since it uses less digits than its factorization.

643572213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12619083.

The product of its digits is 30240, while the sum is 33.

The square root of 643572213 is about 25368.7250960706. The cubic root of 643572213 is about 863.3742562290.

The spelling of 643572213 in words is "six hundred forty-three million, five hundred seventy-two thousand, two hundred thirteen".