206364261 has 16 divisors (see below), whose sum is σ = 286306560. Its totient is φ = 132054720.

The previous prime is 206364259. The next prime is 206364283. The reversal of 206364261 is 162463602.

It is not a de Polignac number, because 206364261 - 2¹ = 206364259 is a prime.

It is a super-2 number, since 2×206364261² = 85172416436152242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206364161) 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, 8196 + ... + 21906.

It is an arithmetic number, because the mean of its divisors is an integer number (17894160).

Almost surely, 2^206364261 is an apocalyptic number.

It is an amenable number.

206364261 is a deficient number, since it is larger than the sum of its proper divisors (79942299).

206364261 is a wasteful number, since it uses less digits than its factorization.

206364261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13916.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 206364261 is about 14365.3841229533. The cubic root of 206364261 is about 590.9419607973.

The spelling of 206364261 in words is "two hundred six million, three hundred sixty-four thousand, two hundred sixty-one".