20603013 has 8 divisors (see below), whose sum is σ = 27547008. Its totient is φ = 13697184.

The previous prime is 20602999. The next prime is 20603017. The reversal of 20603013 is 31030602.

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

It is not a de Polignac number, because 20603013 - 2⁶ = 20602949 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20602983 and 20603001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20603017) 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, 8256 + ... + 10457.

It is an arithmetic number, because the mean of its divisors is an integer number (3443376).

Almost surely, 2^20603013 is an apocalyptic number.

It is an amenable number.

20603013 is a deficient number, since it is larger than the sum of its proper divisors (6943995).

20603013 is a wasteful number, since it uses less digits than its factorization.

20603013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19083.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 20603013 is about 4539.0541966361. The cubic root of 20603013 is about 274.1428429188.

Adding to 20603013 its reverse (31030602), we get a palindrome (51633615).

The spelling of 20603013 in words is "twenty million, six hundred three thousand, thirteen".