205009006 has 8 divisors (see below), whose sum is σ = 308339064. Its totient is φ = 102229320.

The previous prime is 205008997. The next prime is 205009009. The reversal of 205009006 is 600900502.

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

It is a super-2 number, since 2×205009006² = 84057385082216072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205009009) 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, 136660 + ... + 138151.

It is an arithmetic number, because the mean of its divisors is an integer number (38542383).

Almost surely, 2^205009006 is an apocalyptic number.

205009006 is a deficient number, since it is larger than the sum of its proper divisors (103330058).

205009006 is a wasteful number, since it uses less digits than its factorization.

205009006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275186.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 205009006 is about 14318.1355629844. The cubic root of 205009006 is about 589.6454884552.

Adding to 205009006 its reverse (600900502), we get a palindrome (805909508).

The spelling of 205009006 in words is "two hundred five million, nine thousand, six".