678940280 has 16 divisors (see below), whose sum is σ = 1527615720. Its totient is φ = 271576096.

The previous prime is 678940219. The next prime is 678940307. The reversal of 678940280 is 82049876.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8486714 + ... + 8486793.

Almost surely, 2^678940280 is an apocalyptic number.

It is an amenable number.

678940280 is an abundant number, since it is smaller than the sum of its proper divisors (848675440).

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

678940280 is a wasteful number, since it uses less digits than its factorization.

678940280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16973518 (or 16973514 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 678940280 is about 26056.4824947651. The cubic root of 678940280 is about 878.9088921901.

The spelling of 678940280 in words is "six hundred seventy-eight million, nine hundred forty thousand, two hundred eighty".