204906105 has 48 divisors (see below), whose sum is σ = 371314944. Its totient is φ = 108397440.

The previous prime is 204906077. The next prime is 204906131. The reversal of 204906105 is 501609402.

204906105 is a `hidden beast` number, since 2 + 0 + 49 + 0 + 610 + 5 = 666.

It is not a de Polignac number, because 204906105 - 2⁸ = 204905849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 165840 + ... + 167070.

It is an arithmetic number, because the mean of its divisors is an integer number (7735728).

Almost surely, 2^204906105 is an apocalyptic number.

It is an amenable number.

204906105 is a deficient number, since it is larger than the sum of its proper divisors (166408839).

204906105 is a wasteful number, since it uses less digits than its factorization.

204906105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388 (or 1376 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 204906105 is about 14314.5417320989. The cubic root of 204906105 is about 589.5468175625.

The spelling of 204906105 in words is "two hundred four million, nine hundred six thousand, one hundred five".