678755862 has 56 divisors (see below), whose sum is σ = 1540867680. Its totient is φ = 224123760.

The previous prime is 678755849. The next prime is 678755879. The reversal of 678755862 is 268557876.

678755862 is a `hidden beast` number, since 6 + 7 + 87 + 558 + 6 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 678755799 and 678755808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 156787 + ... + 161057.

Almost surely, 2^678755862 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678755862, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (770433840).

678755862 is an abundant number, since it is smaller than the sum of its proper divisors (862111818).

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

678755862 is a wasteful number, since it uses less digits than its factorization.

678755862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4400 (or 4385 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 54.

The square root of 678755862 is about 26052.9434421526. The cubic root of 678755862 is about 878.8293067427.

It can be divided in two parts, 67875 and 5862, that added together give a palindrome (73737).

The spelling of 678755862 in words is "six hundred seventy-eight million, seven hundred fifty-five thousand, eight hundred sixty-two".