206164473 has 4 divisors (see below), whose sum is σ = 274885968. Its totient is φ = 137442980.

The previous prime is 206164463. The next prime is 206164487. The reversal of 206164473 is 374461602.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 206164473 - 2¹³ = 206156281 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (206164463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34360743 + ... + 34360748.

It is an arithmetic number, because the mean of its divisors is an integer number (68721492).

Almost surely, 2^206164473 is an apocalyptic number.

It is an amenable number.

206164473 is a deficient number, since it is larger than the sum of its proper divisors (68721495).

206164473 is an equidigital number, since it uses as much as digits as its factorization.

206164473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68721494.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 206164473 is about 14358.4286396527. The cubic root of 206164473 is about 590.7511957998.

The spelling of 206164473 in words is "two hundred six million, one hundred sixty-four thousand, four hundred seventy-three".