20006061 has 4 divisors (see below), whose sum is σ = 26674752. Its totient is φ = 13337372.

The previous prime is 20006057. The next prime is 20006083. The reversal of 20006061 is 16060002.

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 20006061 - 2² = 20006057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20006061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20006561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3334341 + ... + 3334346.

It is an arithmetic number, because the mean of its divisors is an integer number (6668688).

Almost surely, 2^20006061 is an apocalyptic number.

It is an amenable number.

20006061 is a deficient number, since it is larger than the sum of its proper divisors (6668691).

20006061 is an equidigital number, since it uses as much as digits as its factorization.

20006061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6668690.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 20006061 is about 4472.8135440682. The cubic root of 20006061 is about 271.4691790320.

Adding to 20006061 its reverse (16060002), we get a palindrome (36066063).

The spelling of 20006061 in words is "twenty million, six thousand, sixty-one".