206455047 has 8 divisors (see below), whose sum is σ = 277799280. Its totient is φ = 136373760.

The previous prime is 206455043. The next prime is 206455057. The reversal of 206455047 is 740554602.

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

It is not a de Polignac number, because 206455047 - 2² = 206455043 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 206454999 and 206455017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206455043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315354 + ... + 316007.

It is an arithmetic number, because the mean of its divisors is an integer number (34724910).

Almost surely, 2^206455047 is an apocalyptic number.

206455047 is a deficient number, since it is larger than the sum of its proper divisors (71344233).

206455047 is a wasteful number, since it uses less digits than its factorization.

206455047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631473.

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 206455047 is about 14368.5436631553. The cubic root of 206455047 is about 591.0286059545.

The spelling of 206455047 in words is "two hundred six million, four hundred fifty-five thousand, forty-seven".