206983656 has 96 divisors (see below), whose sum is σ = 623207520. Its totient is φ = 61526400.

The previous prime is 206983633. The next prime is 206983669. The reversal of 206983656 is 656389602.

It is a happy number.

It is a super-2 number, since 2×206983656² = 85684467702252672, which contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 39511 + ... + 44441.

It is an arithmetic number, because the mean of its divisors is an integer number (6491745).

Almost surely, 2^206983656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206983656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311603760).

206983656 is an abundant number, since it is smaller than the sum of its proper divisors (416223864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206983656 is a wasteful number, since it uses less digits than its factorization.

206983656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5007 (or 5000 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 206983656 is about 14386.9265654621. The cubic root of 206983656 is about 591.5326006983.

The spelling of 206983656 in words is "two hundred six million, nine hundred eighty-three thousand, six hundred fifty-six".