206972923 has 2 divisors, whose sum is σ = 206972924. Its totient is φ = 206972922.

The previous prime is 206972917. The next prime is 206973017. The reversal of 206972923 is 329279602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206972923 - 2⁵ = 206972891 is a prime.

It is not a weakly prime, because it can be changed into another prime (206972323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103486461 + 103486462.

It is an arithmetic number, because the mean of its divisors is an integer number (103486462).

Almost surely, 2^206972923 is an apocalyptic number.

206972923 is a deficient number, since it is larger than the sum of its proper divisors (1).

206972923 is an equidigital number, since it uses as much as digits as its factorization.

206972923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 206972923 is about 14386.5535483659. The cubic root of 206972923 is about 591.5223760116.

The spelling of 206972923 in words is "two hundred six million, nine hundred seventy-two thousand, nine hundred twenty-three".