204906087 has 6 divisors (see below), whose sum is σ = 295975472. Its totient is φ = 136604052.

The previous prime is 204906077. The next prime is 204906131. The reversal of 204906087 is 780609402.

204906087 is a `hidden beast` number, since 2 + 0 + 49 + 0 + 608 + 7 = 666.

It is not a de Polignac number, because 204906087 - 2¹⁴ = 204889703 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 (204906017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11383663 + ... + 11383680.

Almost surely, 2^204906087 is an apocalyptic number.

204906087 is a deficient number, since it is larger than the sum of its proper divisors (91069385).

204906087 is a wasteful number, since it uses less digits than its factorization.

204906087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22767349 (or 22767346 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 204906087 is about 14314.5411033676. The cubic root of 204906087 is about 589.5468002996.

The spelling of 204906087 in words is "two hundred four million, nine hundred six thousand, eighty-seven".