66450048 has 128 divisors (see below), whose sum is σ = 205632000. Its totient is φ = 18619392.

The previous prime is 66450029. The next prime is 66450061. The reversal of 66450048 is 84005466.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158383 + ... + 158801.

It is an arithmetic number, because the mean of its divisors is an integer number (1606500).

Almost surely, 2^66450048 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 66450048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102816000).

66450048 is an abundant number, since it is smaller than the sum of its proper divisors (139181952).

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

66450048 is a wasteful number, since it uses less digits than its factorization.

66450048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 66450048 is about 8151.6898861524. The cubic root of 66450048 is about 405.0404836837.

The spelling of 66450048 in words is "sixty-six million, four hundred fifty thousand, forty-eight".