206493956 has 6 divisors (see below), whose sum is σ = 361364430. Its totient is φ = 103246976.

The previous prime is 206493953. The next prime is 206493961. The reversal of 206493956 is 659394602.

It can be written as a sum of positive squares in only one way, i.e., 165533956 + 40960000 = 12866^2 + 6400^2 .

It is not an unprimeable number, because it can be changed into a prime (206493953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25811741 + ... + 25811748.

It is an arithmetic number, because the mean of its divisors is an integer number (60227405).

Almost surely, 2^206493956 is an apocalyptic number.

It is an amenable number.

206493956 is a deficient number, since it is larger than the sum of its proper divisors (154870474).

206493956 is a wasteful number, since it uses less digits than its factorization.

206493956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51623493 (or 51623491 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 44.

The square root of 206493956 is about 14369.8975640051. The cubic root of 206493956 is about 591.0657324991.

The spelling of 206493956 in words is "two hundred six million, four hundred ninety-three thousand, nine hundred fifty-six".