678479808 has 112 divisors (see below), whose sum is σ = 1863912960. Its totient is φ = 217651200.

The previous prime is 678479807. The next prime is 678479819. The reversal of 678479808 is 808974876.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678479801) 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, 621343 + ... + 622433.

It is an arithmetic number, because the mean of its divisors is an integer number (16642080).

Almost surely, 2^678479808 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 678479808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (931956480).

678479808 is an abundant number, since it is smaller than the sum of its proper divisors (1185433152).

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

678479808 is a wasteful number, since it uses less digits than its factorization.

678479808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226 (or 1216 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 57.

The square root of 678479808 is about 26047.6449607253. The cubic root of 678479808 is about 878.7101489050.

The spelling of 678479808 in words is "six hundred seventy-eight million, four hundred seventy-nine thousand, eight hundred eight".