206494073 has 4 divisors (see below), whose sum is σ = 206654580. Its totient is φ = 206333568.

The previous prime is 206494061. The next prime is 206494097. The reversal of 206494073 is 370494602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 203119504 + 3374569 = 14252^2 + 1837^2 .

It is a cyclic number.

It is not a de Polignac number, because 206494073 - 2⁶ = 206494009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206490073) 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, 78308 + ... + 80901.

It is an arithmetic number, because the mean of its divisors is an integer number (51663645).

Almost surely, 2^206494073 is an apocalyptic number.

It is an amenable number.

206494073 is a deficient number, since it is larger than the sum of its proper divisors (160507).

206494073 is a wasteful number, since it uses less digits than its factorization.

206494073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160506.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 206494073 is about 14369.9016350148. The cubic root of 206494073 is about 591.0658441321.

The spelling of 206494073 in words is "two hundred six million, four hundred ninety-four thousand, seventy-three".