678962738668 has 24 divisors (see below), whose sum is σ = 1226712453120. Its totient is φ = 328477022160.

The previous prime is 678962738627. The next prime is 678962738669. The reversal of 678962738668 is 866837269876.

It is a junction number, because it is equal to n+sod(n) for n = 678962738594 and 678962738603.

It is not an unprimeable number, because it can be changed into a prime (678962738669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327813 + ... + 1210531.

It is an arithmetic number, because the mean of its divisors is an integer number (51113018880).

Almost surely, 2^678962738668 is an apocalyptic number.

It is an amenable number.

678962738668 is a deficient number, since it is larger than the sum of its proper divisors (547749714452).

678962738668 is a wasteful number, since it uses less digits than its factorization.

678962738668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888957 (or 888955 counting only the distinct ones).

The product of its digits is 1755758592, while the sum is 76.

The spelling of 678962738668 in words is "six hundred seventy-eight billion, nine hundred sixty-two million, seven hundred thirty-eight thousand, six hundred sixty-eight".