20060805 has 16 divisors (see below), whose sum is σ = 32577984. Its totient is φ = 10538880.

The previous prime is 20060797. The next prime is 20060809. The reversal of 20060805 is 50806002.

It is a happy number.

It is not a de Polignac number, because 20060805 - 2³ = 20060797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20060809) 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, 8976 + ... + 10985.

It is an arithmetic number, because the mean of its divisors is an integer number (2036124).

Almost surely, 2^20060805 is an apocalyptic number.

It is an amenable number.

20060805 is a deficient number, since it is larger than the sum of its proper divisors (12517179).

20060805 is a wasteful number, since it uses less digits than its factorization.

20060805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20036.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 20060805 is about 4478.9290014467. The cubic root of 20060805 is about 271.7165669604.

Adding to 20060805 its reverse (50806002), we get a palindrome (70866807).

The spelling of 20060805 in words is "twenty million, sixty thousand, eight hundred five".