66250752 has 96 divisors (see below), whose sum is σ = 181621440. Its totient is φ = 21463040.

The previous prime is 66250747. The next prime is 66250753. The reversal of 66250752 is 25705266.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (66250753) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 251773 + ... + 252035.

It is an arithmetic number, because the mean of its divisors is an integer number (1891890).

Almost surely, 2^66250752 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 66250752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90810720).

66250752 is an abundant number, since it is smaller than the sum of its proper divisors (115370688).

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

66250752 is a wasteful number, since it uses less digits than its factorization.

66250752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 66250752 is about 8139.4564929116. The cubic root of 66250752 is about 404.6351477136.

The spelling of 66250752 in words is "sixty-six million, two hundred fifty thousand, seven hundred fifty-two".