206400265 has 8 divisors (see below), whose sum is σ = 252950400. Its totient is φ = 161606832.

The previous prime is 206400251. The next prime is 206400269. The reversal of 206400265 is 562004602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206400265 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206400269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438915 + ... + 439384.

It is an arithmetic number, because the mean of its divisors is an integer number (31618800).

Almost surely, 2^206400265 is an apocalyptic number.

It is an amenable number.

206400265 is a deficient number, since it is larger than the sum of its proper divisors (46550135).

206400265 is an equidigital number, since it uses as much as digits as its factorization.

206400265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878351.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 206400265 is about 14366.6372196141. The cubic root of 206400265 is about 590.9763256578.

Adding to 206400265 its reverse (562004602), we get a palindrome (768404867).

The spelling of 206400265 in words is "two hundred six million, four hundred thousand, two hundred sixty-five".