66032250 has 64 divisors (see below), whose sum is σ = 174545280. Its totient is φ = 16569600.

The previous prime is 66032249. The next prime is 66032261. The reversal of 66032250 is 5223066.

It is a self number, because there is not a number n which added to its sum of digits gives 66032250.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10161 + ... + 15339.

It is an arithmetic number, because the mean of its divisors is an integer number (2727270).

Almost surely, 2^66032250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66032250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87272640).

66032250 is an abundant number, since it is smaller than the sum of its proper divisors (108513030).

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

66032250 is a wasteful number, since it uses less digits than its factorization.

66032250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5216 (or 5206 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 66032250 is about 8126.0230125197. The cubic root of 66032250 is about 404.1898145715.

The spelling of 66032250 in words is "sixty-six million, thirty-two thousand, two hundred fifty".