20603097 has 6 divisors (see below), whose sum is σ = 29760042. Its totient is φ = 13735392.

The previous prime is 20603059. The next prime is 20603111. The reversal of 20603097 is 79030602.

It can be written as a sum of positive squares in only one way, i.e., 20602521 + 576 = 4539^2 + 24^2 .

It is not a de Polignac number, because 20603097 - 2¹² = 20599001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20603097.

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 5 ways as a sum of consecutive naturals, for example, 1144608 + ... + 1144625.

It is an arithmetic number, because the mean of its divisors is an integer number (4960007).

Almost surely, 2^20603097 is an apocalyptic number.

It is an amenable number.

20603097 is a deficient number, since it is larger than the sum of its proper divisors (9156945).

20603097 is a wasteful number, since it uses less digits than its factorization.

20603097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2289239 (or 2289236 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 20603097 is about 4539.0634496557. The cubic root of 20603097 is about 274.1432154851.

Adding to 20603097 its reverse (79030602), we get a palindrome (99633699).

The spelling of 20603097 in words is "twenty million, six hundred three thousand, ninety-seven".