66010448 has 60 divisors (see below), whose sum is σ = 149806260. Its totient is φ = 28094976.

The previous prime is 66010429. The next prime is 66010463. The reversal of 66010448 is 84401066.

It can be written as a sum of positive squares in 2 ways, for example, as 1882384 + 64128064 = 1372^2 + 8008^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66010448.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 210740 + ... + 211052.

It is an arithmetic number, because the mean of its divisors is an integer number (2496771).

Almost surely, 2^66010448 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 66010448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74903130).

66010448 is an abundant number, since it is smaller than the sum of its proper divisors (83795812).

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

66010448 is a wasteful number, since it uses less digits than its factorization.

66010448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604 (or 591 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 66010448 is about 8124.6814091385. The cubic root of 66010448 is about 404.1453256218.

The spelling of 66010448 in words is "sixty-six million, ten thousand, four hundred forty-eight".