678332448 has 48 divisors (see below), whose sum is σ = 1978472160. Its totient is φ = 226110528.

The previous prime is 678332443. The next prime is 678332477. The reversal of 678332448 is 844233876.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (678332441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391690 + ... + 393417.

It is an arithmetic number, because the mean of its divisors is an integer number (41218170).

Almost surely, 2^678332448 is an apocalyptic number.

It is an amenable number.

678332448 is an abundant number, since it is smaller than the sum of its proper divisors (1300139712).

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

678332448 is a wasteful number, since it uses less digits than its factorization.

678332448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785126 (or 785112 counting only the distinct ones).

The product of its digits is 774144, while the sum is 45.

The square root of 678332448 is about 26044.8161444845. The cubic root of 678332448 is about 878.6465281941.

The spelling of 678332448 in words is "six hundred seventy-eight million, three hundred thirty-two thousand, four hundred forty-eight".