204002621 has 4 divisors (see below), whose sum is σ = 208746912. Its totient is φ = 199258332.

The previous prime is 204002587. The next prime is 204002633. The reversal of 204002621 is 126200402.

204002621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 204002621 - 2¹⁰ = 204001597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204002621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204002641) 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, 2372081 + ... + 2372166.

It is an arithmetic number, because the mean of its divisors is an integer number (52186728).

Almost surely, 2^204002621 is an apocalyptic number.

It is an amenable number.

204002621 is a deficient number, since it is larger than the sum of its proper divisors (4744291).

204002621 is an equidigital number, since it uses as much as digits as its factorization.

204002621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4744290.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 204002621 is about 14282.9486101435. The cubic root of 204002621 is about 588.6790527906.

The spelling of 204002621 in words is "two hundred four million, two thousand, six hundred twenty-one".