20206061 has 4 divisors (see below), whose sum is σ = 20507712. Its totient is φ = 19904412.

The previous prime is 20206049. The next prime is 20206097. The reversal of 20206061 is 16060202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20206061 - 2²² = 16011757 is a prime.

It is a super-2 number, since 2×20206061² = 816569802271442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20206661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150725 + ... + 150858.

It is an arithmetic number, because the mean of its divisors is an integer number (5126928).

Almost surely, 2^20206061 is an apocalyptic number.

It is an amenable number.

20206061 is a deficient number, since it is larger than the sum of its proper divisors (301651).

20206061 is an equidigital number, since it uses as much as digits as its factorization.

20206061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301650.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 20206061 is about 4495.1152376775. The cubic root of 20206061 is about 272.3708042839.

Adding to 20206061 its reverse (16060202), we get a palindrome (36266263).

The spelling of 20206061 in words is "twenty million, two hundred six thousand, sixty-one".