204077 has 4 divisors (see below), whose sum is σ = 206460. Its totient is φ = 201696.

The previous prime is 204067. The next prime is 204101. The reversal of 204077 is 770402.

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 48841 + 155236 = 221^2 + 394^2 .

It is a cyclic number.

It is not a de Polignac number, because 204077 - 2⁶ = 204013 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 (204007) 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, 1058 + ... + 1235.

It is an arithmetic number, because the mean of its divisors is an integer number (51615).

2²⁰⁴⁰⁷⁷ is an apocalyptic number.

It is an amenable number.

204077 is a deficient number, since it is larger than the sum of its proper divisors (2383).

204077 is an equidigital number, since it uses as much as digits as its factorization.

204077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2382.

The product of its (nonzero) digits is 392, while the sum is 20.

The square root of 204077 is about 451.7488240162. The cubic root of 204077 is about 58.8750587883.

Adding to 204077 its reverse (770402), we get a palindrome (974479).

It can be divided in two parts, 2040 and 77, that multiplied together give a triangular number (157080 = T₅₆₀).

The spelling of 204077 in words is "two hundred four thousand, seventy-seven", and thus it is an iban number.