20061606 has 16 divisors (see below), whose sum is σ = 42235200. Its totient is φ = 6335208.

The previous prime is 20061583. The next prime is 20061611. The reversal of 20061606 is 60616002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87876 + ... + 88103.

It is an arithmetic number, because the mean of its divisors is an integer number (2639700).

Almost surely, 2^20061606 is an apocalyptic number.

20061606 is an abundant number, since it is smaller than the sum of its proper divisors (22173594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20061606 is a wasteful number, since it uses less digits than its factorization.

20061606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176003.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 20061606 is about 4479.0184192521. The cubic root of 20061606 is about 271.7201833336.

Adding to 20061606 its reverse (60616002), we get a palindrome (80677608).

The spelling of 20061606 in words is "twenty million, sixty-one thousand, six hundred six".