204652645 has 4 divisors (see below), whose sum is σ = 245583180. Its totient is φ = 163722112.

The previous prime is 204652633. The next prime is 204652649. The reversal of 204652645 is 546256402.

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

It can be written as a sum of positive squares in 2 ways, for example, as 44528929 + 160123716 = 6673^2 + 12654^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204652645 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204652645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204652649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20465260 + ... + 20465269.

It is an arithmetic number, because the mean of its divisors is an integer number (61395795).

Almost surely, 2^204652645 is an apocalyptic number.

It is an amenable number.

204652645 is a deficient number, since it is larger than the sum of its proper divisors (40930535).

204652645 is an equidigital number, since it uses as much as digits as its factorization.

204652645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40930534.

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 204652645 is about 14305.6857577678. The cubic root of 204652645 is about 589.3036359515.

The spelling of 204652645 in words is "two hundred four million, six hundred fifty-two thousand, six hundred forty-five".