678871616 has 28 divisors (see below), whose sum is σ = 1378470192. Its totient is φ = 331540608.

The previous prime is 678871559. The next prime is 678871621. The reversal of 678871616 is 616178876.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120590 + ... + 126093.

Almost surely, 2^678871616 is an apocalyptic number.

It is an amenable number.

678871616 is an abundant number, since it is smaller than the sum of its proper divisors (699598576).

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

678871616 is a wasteful number, since it uses less digits than its factorization.

678871616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246738 (or 246728 counting only the distinct ones).

The product of its digits is 677376, while the sum is 50.

The square root of 678871616 is about 26055.1648622687. The cubic root of 678871616 is about 878.8792619774.

The spelling of 678871616 in words is "six hundred seventy-eight million, eight hundred seventy-one thousand, six hundred sixteen".