20706201 has 6 divisors (see below), whose sum is σ = 29908970. Its totient is φ = 13804128.

The previous prime is 20706167. The next prime is 20706209. The reversal of 20706201 is 10260702.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13286025 + 7420176 = 3645^2 + 2724^2 .

It is not a de Polignac number, because 20706201 - 2¹⁰ = 20705177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20706209) 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, 1150336 + ... + 1150353.

Almost surely, 2^20706201 is an apocalyptic number.

It is an amenable number.

20706201 is a deficient number, since it is larger than the sum of its proper divisors (9202769).

20706201 is a wasteful number, since it uses less digits than its factorization.

20706201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2300695 (or 2300692 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 20706201 is about 4550.4066851217. The cubic root of 20706201 is about 274.5997527311.

Adding to 20706201 its reverse (10260702), we get a palindrome (30966903).

The spelling of 20706201 in words is "twenty million, seven hundred six thousand, two hundred one".