20600897 has 4 divisors (see below), whose sum is σ = 21157716. Its totient is φ = 20044080.

The previous prime is 20600873. The next prime is 20600903. The reversal of 20600897 is 79800602.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12988816 + 7612081 = 3604^2 + 2759^2 .

It is a cyclic number.

It is not a de Polignac number, because 20600897 - 2⁸ = 20600641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20600837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278354 + ... + 278427.

It is an arithmetic number, because the mean of its divisors is an integer number (5289429).

Almost surely, 2^20600897 is an apocalyptic number.

It is an amenable number.

20600897 is a deficient number, since it is larger than the sum of its proper divisors (556819).

20600897 is an equidigital number, since it uses as much as digits as its factorization.

20600897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556818.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 20600897 is about 4538.8211024450. The cubic root of 20600897 is about 274.1334574612.

The spelling of 20600897 in words is "twenty million, six hundred thousand, eight hundred ninety-seven".