206005107 has 16 divisors (see below), whose sum is σ = 342450432. Its totient is φ = 107015520.

The previous prime is 206005091. The next prime is 206005109. The reversal of 206005107 is 701500602.

It is not a de Polignac number, because 206005107 - 2⁴ = 206005091 is a prime.

It is a super-2 number, since 2×206005107² = 84876208220162898, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (206005109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 445668 + ... + 446129.

It is an arithmetic number, because the mean of its divisors is an integer number (21403152).

Almost surely, 2^206005107 is an apocalyptic number.

206005107 is a deficient number, since it is larger than the sum of its proper divisors (136445325).

206005107 is a wasteful number, since it uses less digits than its factorization.

206005107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891818.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 206005107 is about 14352.8780040799. The cubic root of 206005107 is about 590.5989388462.

Adding to 206005107 its reverse (701500602), we get a palindrome (907505709).

The spelling of 206005107 in words is "two hundred six million, five thousand, one hundred seven".