206445423 has 8 divisors (see below), whose sum is σ = 277014448. Its totient is φ = 136753344.

The previous prime is 206445419. The next prime is 206445427. The reversal of 206445423 is 324544602.

It is an interprime number because it is at equal distance from previous prime (206445419) and next prime (206445427).

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

It is not a de Polignac number, because 206445423 - 2² = 206445419 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 (206445427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218686 + ... + 219627.

It is an arithmetic number, because the mean of its divisors is an integer number (34626806).

Almost surely, 2^206445423 is an apocalyptic number.

206445423 is a deficient number, since it is larger than the sum of its proper divisors (70569025).

206445423 is a wasteful number, since it uses less digits than its factorization.

206445423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438473.

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 206445423 is about 14368.2087610112. The cubic root of 206445423 is about 591.0194221188.

The spelling of 206445423 in words is "two hundred six million, four hundred forty-five thousand, four hundred twenty-three".