20066508 has 192 divisors, whose sum is σ = 68812800. Its totient is φ = 4898880.

The previous prime is 20066503. The next prime is 20066513. The reversal of 20066508 is 80566002.

20066508 is a `hidden beast` number, since 2 + 0 + 0 + 6 + 650 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (20066503) and next prime (20066513).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20066503) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 157941 + ... + 158067.

It is an arithmetic number, because the mean of its divisors is an integer number (358400).

Almost surely, 2^20066508 is an apocalyptic number.

20066508 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20066508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34406400).

20066508 is an abundant number, since it is smaller than the sum of its proper divisors (48746292).

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

20066508 is a wasteful number, since it uses less digits than its factorization.

20066508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 20066508 is about 4479.5656039397. The cubic root of 20066508 is about 271.7423128990.

The spelling of 20066508 in words is "twenty million, sixty-six thousand, five hundred eight".