678250396860 has 96 divisors (see below), whose sum is σ = 1967651481600. Its totient is φ = 174381553920.

The previous prime is 678250396843. The next prime is 678250396867. The reversal of 678250396860 is 68693052876.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 678250396794 and 678250396803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678250396867) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 177450 + ... + 1178129.

It is an arithmetic number, because the mean of its divisors is an integer number (20496369600).

Almost surely, 2^678250396860 is an apocalyptic number.

678250396860 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 678250396860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (983825740800).

678250396860 is an abundant number, since it is smaller than the sum of its proper divisors (1289401084740).

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

678250396860 is a wasteful number, since it uses less digits than its factorization.

678250396860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355891 (or 1355889 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 60.

The spelling of 678250396860 in words is "six hundred seventy-eight billion, two hundred fifty million, three hundred ninety-six thousand, eight hundred sixty".