206946663 has 48 divisors (see below), whose sum is σ = 361794048. Its totient is φ = 102801600.

The previous prime is 206946653. The next prime is 206946671. The reversal of 206946663 is 366649602.

206946663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 206946663 - 2⁵ = 206946631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206946653) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56673 + ... + 60213.

It is an arithmetic number, because the mean of its divisors is an integer number (7537376).

Almost surely, 2^206946663 is an apocalyptic number.

206946663 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

206946663 is a deficient number, since it is larger than the sum of its proper divisors (154847385).

206946663 is a wasteful number, since it uses less digits than its factorization.

206946663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3596 (or 3585 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 42.

The square root of 206946663 is about 14385.6408616370. The cubic root of 206946663 is about 591.4973581906.

The spelling of 206946663 in words is "two hundred six million, nine hundred forty-six thousand, six hundred sixty-three".