206626313 has 4 divisors (see below), whose sum is σ = 218780820. Its totient is φ = 194471808.

The previous prime is 206626307. The next prime is 206626327. The reversal of 206626313 is 313626602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 131492089 + 75134224 = 11467^2 + 8668^2 .

It is a cyclic number.

It is not a de Polignac number, because 206626313 - 2⁶ = 206626249 is a prime.

It is a super-3 number, since 3×206626313³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (206626373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6077228 + ... + 6077261.

It is an arithmetic number, because the mean of its divisors is an integer number (54695205).

Almost surely, 2^206626313 is an apocalyptic number.

It is an amenable number.

206626313 is a deficient number, since it is larger than the sum of its proper divisors (12154507).

206626313 is a wasteful number, since it uses less digits than its factorization.

206626313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12154506.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 206626313 is about 14374.5021826844. The cubic root of 206626313 is about 591.1919912039.

The spelling of 206626313 in words is "two hundred six million, six hundred twenty-six thousand, three hundred thirteen".