206920943 has 4 divisors (see below), whose sum is σ = 207346320. Its totient is φ = 206495568.

The previous prime is 206920937. The next prime is 206920969. The reversal of 206920943 is 349029602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 349029602 = 2 ⋅174514801.

It is a cyclic number.

It is not a de Polignac number, because 206920943 - 2⁴ = 206920927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206920933) 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 in 3 ways as a sum of consecutive naturals, for example, 211958 + ... + 212931.

It is an arithmetic number, because the mean of its divisors is an integer number (51836580).

Almost surely, 2^206920943 is an apocalyptic number.

206920943 is a deficient number, since it is larger than the sum of its proper divisors (425377).

206920943 is an equidigital number, since it uses as much as digits as its factorization.

206920943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425376.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 206920943 is about 14384.7468868938. The cubic root of 206920943 is about 591.4728527744.

The spelling of 206920943 in words is "two hundred six million, nine hundred twenty thousand, nine hundred forty-three".