678345750 has 48 divisors (see below), whose sum is σ = 1834252992. Its totient is φ = 180891600.

The previous prime is 678345749. The next prime is 678345797. The reversal of 678345750 is 57543876.

678345750 is a `hidden beast` number, since 6 + 78 + 3 + 4 + 575 + 0 = 666.

678345750 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 678345696 and 678345705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148494 + ... + 152993.

It is an arithmetic number, because the mean of its divisors is an integer number (38213604).

Almost surely, 2^678345750 is an apocalyptic number.

678345750 is an abundant number, since it is smaller than the sum of its proper divisors (1155907242).

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

678345750 is a wasteful number, since it uses less digits than its factorization.

678345750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301510 (or 301497 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The square root of 678345750 is about 26045.0715107484. The cubic root of 678345750 is about 878.6522715332.

The spelling of 678345750 in words is "six hundred seventy-eight million, three hundred forty-five thousand, seven hundred fifty".