206432656 has 10 divisors (see below), whose sum is σ = 399963302. Its totient is φ = 103216320.

The previous prime is 206432651. The next prime is 206432687. The reversal of 206432656 is 656234602.

It can be written as a sum of positive squares in only one way, i.e., 176358400 + 30074256 = 13280^2 + 5484^2 .

It is a super-2 number, since 2×206432656² = 85228882926428672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (206432651) 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 as a sum of consecutive naturals, namely, 6451005 + ... + 6451036.

Almost surely, 2^206432656 is an apocalyptic number.

It is an amenable number.

206432656 is a deficient number, since it is larger than the sum of its proper divisors (193530646).

206432656 is a wasteful number, since it uses less digits than its factorization.

206432656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12902049 (or 12902043 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 206432656 is about 14367.7644746843. The cubic root of 206432656 is about 591.0072385912.

The spelling of 206432656 in words is "two hundred six million, four hundred thirty-two thousand, six hundred fifty-six".