20006361 has 6 divisors (see below), whose sum is σ = 28898090. Its totient is φ = 13337568.

The previous prime is 20006359. The next prime is 20006419. The reversal of 20006361 is 16360002.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17264025 + 2742336 = 4155^2 + 1656^2 .

It is not a de Polignac number, because 20006361 - 2¹ = 20006359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20006351) 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, 1111456 + ... + 1111473.

Almost surely, 2^20006361 is an apocalyptic number.

It is an amenable number.

20006361 is a deficient number, since it is larger than the sum of its proper divisors (8891729).

20006361 is a wasteful number, since it uses less digits than its factorization.

20006361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222935 (or 2222932 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 20006361 is about 4472.8470798810. The cubic root of 20006361 is about 271.4705359599.

Adding to 20006361 its reverse (16360002), we get a palindrome (36366363).

The spelling of 20006361 in words is "twenty million, six thousand, three hundred sixty-one".