20660060 has 24 divisors (see below), whose sum is σ = 44560320. Its totient is φ = 8040384.

The previous prime is 20660051. The next prime is 20660099. The reversal of 20660060 is 6006602.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 13220 + ... + 14699.

It is an arithmetic number, because the mean of its divisors is an integer number (1856680).

Almost surely, 2^20660060 is an apocalyptic number.

20660060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20660060 is an abundant number, since it is smaller than the sum of its proper divisors (23900260).

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

20660060 is a wasteful number, since it uses less digits than its factorization.

20660060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27965 (or 27963 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 20660060 is about 4545.3338711254. Note that the first 3 decimals coincide. The cubic root of 20660060 is about 274.3956314275.

Adding to 20660060 its reverse (6006602), we get a palindrome (26666662).

The spelling of 20660060 in words is "twenty million, six hundred sixty thousand, sixty".