206850005 has 4 divisors (see below), whose sum is σ = 248220012. Its totient is φ = 165480000.

The previous prime is 206849989. The next prime is 206850023. The reversal of 206850005 is 500058602.

206850005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 63377521 + 143472484 = 7961^2 + 11978^2 .

It is not a de Polignac number, because 206850005 - 2⁴ = 206849989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20684996 + ... + 20685005.

It is an arithmetic number, because the mean of its divisors is an integer number (62055003).

Almost surely, 2^206850005 is an apocalyptic number.

It is an amenable number.

206850005 is a deficient number, since it is larger than the sum of its proper divisors (41370007).

206850005 is an equidigital number, since it uses as much as digits as its factorization.

206850005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41370006.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 206850005 is about 14382.2809387107. The cubic root of 206850005 is about 591.4052541764.

The spelling of 206850005 in words is "two hundred six million, eight hundred fifty thousand, five".