206151265 has 16 divisors (see below), whose sum is σ = 262980432. Its totient is φ = 154599424.

The previous prime is 206151233. The next prime is 206151301. The reversal of 206151265 is 562151602.

It can be written as a sum of positive squares in 8 ways, for example, as 37748736 + 168402529 = 6144^2 + 12977^2 .

It is a cyclic number.

It is not a de Polignac number, because 206151265 - 2⁵ = 206151233 is a prime.

It is a super-2 number, since 2×206151265² = 84996688122200450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 17127 + ... + 26563.

It is an arithmetic number, because the mean of its divisors is an integer number (16436277).

Almost surely, 2^206151265 is an apocalyptic number.

It is an amenable number.

206151265 is a deficient number, since it is larger than the sum of its proper divisors (56829167).

206151265 is a wasteful number, since it uses less digits than its factorization.

206151265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9716.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 206151265 is about 14357.9686933772. The cubic root of 206151265 is about 590.7385799688.

The spelling of 206151265 in words is "two hundred six million, one hundred fifty-one thousand, two hundred sixty-five".