66200600 has 48 divisors (see below), whose sum is σ = 154811520. Its totient is φ = 26326400.

The previous prime is 66200599. The next prime is 66200621. The reversal of 66200600 is 600266.

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

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37334 + ... + 39066.

It is an arithmetic number, because the mean of its divisors is an integer number (3225240).

Almost surely, 2^66200600 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66200600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77405760).

66200600 is an abundant number, since it is smaller than the sum of its proper divisors (88610920).

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

66200600 is a wasteful number, since it uses less digits than its factorization.

66200600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1940 (or 1931 counting only the distinct ones).

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

The square root of 66200600 is about 8136.3751142631. The cubic root of 66200600 is about 404.5330186351.

Adding to 66200600 its reverse (600266), we get a palindrome (66800866).

The spelling of 66200600 in words is "sixty-six million, two hundred thousand, six hundred".