678485280 has 384 divisors, whose sum is σ = 2515193856. Its totient is φ = 152064000.

The previous prime is 678485267. The next prime is 678485321. The reversal of 678485280 is 82584876.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4493205 + ... + 4493355.

It is an arithmetic number, because the mean of its divisors is an integer number (6549984).

Almost surely, 2^678485280 is an apocalyptic number.

678485280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678485280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1257596928).

678485280 is an abundant number, since it is smaller than the sum of its proper divisors (1836708576).

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

678485280 is a wasteful number, since it uses less digits than its factorization.

678485280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 48.

The square root of 678485280 is about 26047.7499988003. The cubic root of 678485280 is about 878.7125111905.

The spelling of 678485280 in words is "six hundred seventy-eight million, four hundred eighty-five thousand, two hundred eighty".