20601003 has 4 divisors (see below), whose sum is σ = 27468008. Its totient is φ = 13734000.

The previous prime is 20600977. The next prime is 20601023. The reversal of 20601003 is 30010602.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20601003 - 2¹⁰ = 20599979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20601003.

It is not an unprimeable number, because it can be changed into a prime (20601023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3433498 + ... + 3433503.

It is an arithmetic number, because the mean of its divisors is an integer number (6867002).

Almost surely, 2^20601003 is an apocalyptic number.

20601003 is a deficient number, since it is larger than the sum of its proper divisors (6867005).

20601003 is an equidigital number, since it uses as much as digits as its factorization.

20601003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6867004.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 20601003 is about 4538.8327794710. The cubic root of 20601003 is about 274.1339276365.

Adding to 20601003 its reverse (30010602), we get a palindrome (50611605).

The spelling of 20601003 in words is "twenty million, six hundred one thousand, three".