66830448 has 80 divisors (see below), whose sum is σ = 183480320. Its totient is φ = 20901888.

The previous prime is 66830447. The next prime is 66830453. The reversal of 66830448 is 84403866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66830443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115536 + ... + 116112.

It is an arithmetic number, because the mean of its divisors is an integer number (2293504).

Almost surely, 2^66830448 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 66830448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91740160).

66830448 is an abundant number, since it is smaller than the sum of its proper divisors (116649872).

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

66830448 is a wasteful number, since it uses less digits than its factorization.

66830448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734 (or 728 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 66830448 is about 8174.9891743048. The cubic root of 66830448 is about 405.8119118746.

The spelling of 66830448 in words is "sixty-six million, eight hundred thirty thousand, four hundred forty-eight".