200204861 has 4 divisors (see below), whose sum is σ = 204860832. Its totient is φ = 195548892.

The previous prime is 200204839. The next prime is 200204929. The reversal of 200204861 is 168402002.

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, and also an emirpimes, since its reverse is a distinct semiprime: 168402002 = 2 ⋅84201001.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200204861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200204821) 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, 2327921 + ... + 2328006.

It is an arithmetic number, because the mean of its divisors is an integer number (51215208).

Almost surely, 2^200204861 is an apocalyptic number.

It is an amenable number.

200204861 is a deficient number, since it is larger than the sum of its proper divisors (4655971).

200204861 is an equidigital number, since it uses as much as digits as its factorization.

200204861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4655970.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 200204861 is about 14149.3767000529. The cubic root of 200204861 is about 585.0031519055.

Adding to 200204861 its reverse (168402002), we get a palindrome (368606863).

The spelling of 200204861 in words is "two hundred million, two hundred four thousand, eight hundred sixty-one".