206848905 has 16 divisors (see below), whose sum is σ = 334679040. Its totient is φ = 109079168.

The previous prime is 206848903. The next prime is 206848921. The reversal of 206848905 is 509848602.

It is a cyclic number.

It is not a de Polignac number, because 206848905 - 2¹ = 206848903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206848903) 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 15 ways as a sum of consecutive naturals, for example, 76137 + ... + 78806.

It is an arithmetic number, because the mean of its divisors is an integer number (20917440).

Almost surely, 2^206848905 is an apocalyptic number.

It is an amenable number.

206848905 is a deficient number, since it is larger than the sum of its proper divisors (127830135).

206848905 is a wasteful number, since it uses less digits than its factorization.

206848905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155040.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 206848905 is about 14382.2426971596. The cubic root of 206848905 is about 591.4042058372.

The spelling of 206848905 in words is "two hundred six million, eight hundred forty-eight thousand, nine hundred five".