20600009 has 8 divisors (see below), whose sum is σ = 22271040. Its totient is φ = 18987696.

The previous prime is 20600003. The next prime is 20600051. The reversal of 20600009 is 90000602.

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

It is a cyclic number.

It is not a de Polignac number, because 20600009 - 2⁴ = 20599993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20600009.

It is not an unprimeable number, because it can be changed into a prime (20600003) 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, 13949 + ... + 15354.

It is an arithmetic number, because the mean of its divisors is an integer number (2783880).

Almost surely, 2^20600009 is an apocalyptic number.

It is an amenable number.

20600009 is a deficient number, since it is larger than the sum of its proper divisors (1671031).

20600009 is a wasteful number, since it uses less digits than its factorization.

20600009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29359.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 20600009 is about 4538.7232786324. The cubic root of 20600009 is about 274.1295185711.

The spelling of 20600009 in words is "twenty million, six hundred thousand, nine".