20659941 has 20 divisors (see below), whose sum is σ = 31620204. Its totient is φ = 13435200.

The previous prime is 20659927. The next prime is 20659943. The reversal of 20659941 is 14995602.

20659941 is a `hidden beast` number, since 20 + 6 + 599 + 41 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 893025 + 19766916 = 945^2 + 4446^2 .

It is not a de Polignac number, because 20659941 - 2⁷ = 20659813 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20659896 and 20659905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20659943) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 211 + ... + 6431.

Almost surely, 2^20659941 is an apocalyptic number.

It is an amenable number.

20659941 is a deficient number, since it is larger than the sum of its proper divisors (10960263).

20659941 is an equidigital number, since it uses as much as digits as its factorization.

20659941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6274 (or 6265 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 20659941 is about 4545.3207807590. The cubic root of 20659941 is about 274.3951045955.

The spelling of 20659941 in words is "twenty million, six hundred fifty-nine thousand, nine hundred forty-one".