206490473 has 16 divisors (see below), whose sum is σ = 249553920. Its totient is φ = 167097600.

The previous prime is 206490467. The next prime is 206490497. The reversal of 206490473 is 374094602.

It is a cyclic number.

It is not a de Polignac number, because 206490473 - 2⁴ = 206490457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206490463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2708 + ... + 20501.

It is an arithmetic number, because the mean of its divisors is an integer number (15597120).

Almost surely, 2^206490473 is an apocalyptic number.

It is an amenable number.

206490473 is a deficient number, since it is larger than the sum of its proper divisors (43063447).

206490473 is a wasteful number, since it uses less digits than its factorization.

206490473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23288.

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

The square root of 206490473 is about 14369.7763726510. The cubic root of 206490473 is about 591.0624092484.

The spelling of 206490473 in words is "two hundred six million, four hundred ninety thousand, four hundred seventy-three".