66200512 has 28 divisors (see below), whose sum is σ = 150134320. Its totient is φ = 28371456.

The previous prime is 66200501. The next prime is 66200549. The reversal of 66200512 is 21500266.

It is a tau number, because it is divible by the number of its divisors (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73437 + ... + 74332.

It is an arithmetic number, because the mean of its divisors is an integer number (5361940).

Almost surely, 2^66200512 is an apocalyptic number.

It is an amenable number.

66200512 is an abundant number, since it is smaller than the sum of its proper divisors (83933808).

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

66200512 is a wasteful number, since it uses less digits than its factorization.

66200512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147788 (or 147778 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 66200512 is about 8136.3697064477. The cubic root of 66200512 is about 404.5328393873.

Adding to 66200512 its reverse (21500266), we get a palindrome (87700778).

The spelling of 66200512 in words is "sixty-six million, two hundred thousand, five hundred twelve".