204214643 has 4 divisors (see below), whose sum is σ = 205106640. Its totient is φ = 203322648.

The previous prime is 204214613. The next prime is 204214657. The reversal of 204214643 is 346412402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204214643 - 2⁶ = 204214579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204214613) 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, 445655 + ... + 446112.

It is an arithmetic number, because the mean of its divisors is an integer number (51276660).

Almost surely, 2^204214643 is an apocalyptic number.

204214643 is a deficient number, since it is larger than the sum of its proper divisors (891997).

204214643 is an equidigital number, since it uses as much as digits as its factorization.

204214643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891996.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 204214643 is about 14290.3688895703. The cubic root of 204214643 is about 588.8829222224.

The spelling of 204214643 in words is "two hundred four million, two hundred fourteen thousand, six hundred forty-three".