206783923 has 2 divisors, whose sum is σ = 206783924. Its totient is φ = 206783922.

The previous prime is 206783917. The next prime is 206783957. The reversal of 206783923 is 329387602.

206783923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206783923 - 2²¹ = 204686771 is a prime.

It is a super-2 number, since 2×206783923² = 85519181622539858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (206783963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103391961 + 103391962.

It is an arithmetic number, because the mean of its divisors is an integer number (103391962).

Almost surely, 2^206783923 is an apocalyptic number.

206783923 is a deficient number, since it is larger than the sum of its proper divisors (1).

206783923 is an equidigital number, since it uses as much as digits as its factorization.

206783923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 206783923 is about 14379.9834144550. The cubic root of 206783923 is about 591.3422690768.

The spelling of 206783923 in words is "two hundred six million, seven hundred eighty-three thousand, nine hundred twenty-three".