206747253 has 12 divisors (see below), whose sum is σ = 311619360. Its totient is φ = 131838696.

The previous prime is 206747249. The next prime is 206747279. The reversal of 206747253 is 352747602.

It is a happy number.

It is not a de Polignac number, because 206747253 - 2² = 206747249 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206740253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 499183 + ... + 499596.

It is an arithmetic number, because the mean of its divisors is an integer number (25968280).

Almost surely, 2^206747253 is an apocalyptic number.

206747253 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

206747253 is a deficient number, since it is larger than the sum of its proper divisors (104872107).

206747253 is a wasteful number, since it uses less digits than its factorization.

206747253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998808 (or 998805 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

The square root of 206747253 is about 14378.7083216817. The cubic root of 206747253 is about 591.3073118090.

The spelling of 206747253 in words is "two hundred six million, seven hundred forty-seven thousand, two hundred fifty-three".