206551423 has 8 divisors (see below), whose sum is σ = 222602688. Its totient is φ = 190523424.

The previous prime is 206551379. The next prime is 206551439. The reversal of 206551423 is 324155602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 206551423 - 2¹³ = 206543231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 206551391 and 206551400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206551463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15561 + ... + 25597.

It is an arithmetic number, because the mean of its divisors is an integer number (27825336).

Almost surely, 2^206551423 is an apocalyptic number.

206551423 is a deficient number, since it is larger than the sum of its proper divisors (16051265).

206551423 is a wasteful number, since it uses less digits than its factorization.

206551423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11633.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 206551423 is about 14371.8969868281. The cubic root of 206551423 is about 591.1205583555.

The spelling of 206551423 in words is "two hundred six million, five hundred fifty-one thousand, four hundred twenty-three".