206893980736 has 21 divisors (see below), whose sum is σ = 410562463989. Its totient is φ = 103445170944.

The previous prime is 206893980697. The next prime is 206893980743. The reversal of 206893980736 is 637089398602.

The square root of 206893980736 is 454856.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 85053889600 + 121840091136 = 291640^2 + 349056^2 .

It is a super-3 number, since 3×206893980736³ (a number of 35 digits) contains 333 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 (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3610420 + ... + 3667276.

Almost surely, 2^206893980736 is an apocalyptic number.

206893980736 is the 454856-th square number.

It is an amenable number.

206893980736 is a deficient number, since it is larger than the sum of its proper divisors (203668483253).

206893980736 is an frugal number, since it uses more digits than its factorization.

206893980736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113726 (or 56859 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 61.

The spelling of 206893980736 in words is "two hundred six billion, eight hundred ninety-three million, nine hundred eighty thousand, seven hundred thirty-six".