678699360 has 144 divisors (see below), whose sum is σ = 2322828144. Its totient is φ = 180458496.

The previous prime is 678699353. The next prime is 678699367. The reversal of 678699360 is 63996876.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (678699353) and next prime (678699367).

It is a tau number, because it is divible by the number of its divisors (144).

It is a junction number, because it is equal to n+sod(n) for n = 678699297 and 678699306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678699367) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 925554 + ... + 926286.

It is an arithmetic number, because the mean of its divisors is an integer number (16130751).

Almost surely, 2^678699360 is an apocalyptic number.

678699360 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 678699360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1161414072).

678699360 is an abundant number, since it is smaller than the sum of its proper divisors (1644128784).

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

678699360 is a wasteful number, since it uses less digits than its factorization.

678699360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397 (or 1386 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The square root of 678699360 is about 26051.8590507472. The cubic root of 678699360 is about 878.8049204627.

The spelling of 678699360 in words is "six hundred seventy-eight million, six hundred ninety-nine thousand, three hundred sixty".