20061005 has 8 divisors (see below), whose sum is σ = 24633312. Its totient is φ = 15675408.

The previous prime is 20060981. The next prime is 20061007. The reversal of 20061005 is 50016002.

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 20061005 - 2⁸ = 20060749 is a prime.

It is a super-4 number, since 4×20061005⁴ (a number of 30 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20061007) 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, 46439 + ... + 46868.

It is an arithmetic number, because the mean of its divisors is an integer number (3079164).

Almost surely, 2^20061005 is an apocalyptic number.

It is an amenable number.

20061005 is a deficient number, since it is larger than the sum of its proper divisors (4572307).

20061005 is an equidigital number, since it uses as much as digits as its factorization.

20061005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93355.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 20061005 is about 4478.9513281571. The cubic root of 20061005 is about 271.7174699340.

Adding to 20061005 its reverse (50016002), we get a palindrome (70077007).

The spelling of 20061005 in words is "twenty million, sixty-one thousand, five".