206356245 has 32 divisors (see below), whose sum is σ = 348364800. Its totient is φ = 104019264.

The previous prime is 206356237. The next prime is 206356259. The reversal of 206356245 is 542653602.

It is not a de Polignac number, because 206356245 - 2³ = 206356237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 238684 + ... + 239546.

It is an arithmetic number, because the mean of its divisors is an integer number (10886400).

Almost surely, 2^206356245 is an apocalyptic number.

It is an amenable number.

206356245 is a deficient number, since it is larger than the sum of its proper divisors (142008555).

206356245 is a wasteful number, since it uses less digits than its factorization.

206356245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729.

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 206356245 is about 14365.1051162183. The cubic root of 206356245 is about 590.9343091945.

The spelling of 206356245 in words is "two hundred six million, three hundred fifty-six thousand, two hundred forty-five".