6678438280 has 16 divisors (see below), whose sum is σ = 15026486220. Its totient is φ = 2671375296.

The previous prime is 6678438259. The next prime is 6678438301. The reversal of 6678438280 is 828348766.

It is an interprime number because it is at equal distance from previous prime (6678438259) and next prime (6678438301).

It can be written as a sum of positive squares in 2 ways, for example, as 6528963204 + 149475076 = 80802^2 + 12226^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83480439 + ... + 83480518.

Almost surely, 2^6678438280 is an apocalyptic number.

It is an amenable number.

6678438280 is an abundant number, since it is smaller than the sum of its proper divisors (8348047940).

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

6678438280 is a wasteful number, since it uses less digits than its factorization.

6678438280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166960968 (or 166960964 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 52.

The square root of 6678438280 is about 81721.7124147555. The cubic root of 6678438280 is about 1883.1791576264.

The spelling of 6678438280 in words is "six billion, six hundred seventy-eight million, four hundred thirty-eight thousand, two hundred eighty".