206772763 has 4 divisors (see below), whose sum is σ = 217655560. Its totient is φ = 195889968.

The previous prime is 206772749. The next prime is 206772773. The reversal of 206772763 is 367277602.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206772763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206772743) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5441370 + ... + 5441407.

It is an arithmetic number, because the mean of its divisors is an integer number (54413890).

Almost surely, 2^206772763 is an apocalyptic number.

206772763 is a deficient number, since it is larger than the sum of its proper divisors (10882797).

206772763 is a wasteful number, since it uses less digits than its factorization.

206772763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10882796.

The product of its (nonzero) digits is 148176, while the sum is 40.

The square root of 206772763 is about 14379.5953698287. The cubic root of 206772763 is about 591.3316307604.

The spelling of 206772763 in words is "two hundred six million, seven hundred seventy-two thousand, seven hundred sixty-three".