678216448 has 108 divisors (see below), whose sum is σ = 1696356480. Its totient is φ = 268240896.

The previous prime is 678216437. The next prime is 678216491. The reversal of 678216448 is 844612876.

It is a junction number, because it is equal to n+sod(n) for n = 678216398 and 678216407.

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, 160993 + ... + 165151.

Almost surely, 2^678216448 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 678216448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (848178240).

678216448 is an abundant number, since it is smaller than the sum of its proper divisors (1018140032).

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

678216448 is a wasteful number, since it uses less digits than its factorization.

678216448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4202 (or 4181 counting only the distinct ones).

The product of its digits is 516096, while the sum is 46.

The square root of 678216448 is about 26042.5891185957. The cubic root of 678216448 is about 878.5964402625.

The spelling of 678216448 in words is "six hundred seventy-eight million, two hundred sixteen thousand, four hundred forty-eight".