678395600 has 30 divisors (see below), whose sum is σ = 1629846390. Its totient is φ = 271358080.

The previous prime is 678395567. The next prime is 678395609. The reversal of 678395600 is 6593876.

It can be written as a sum of positive squares in 3 ways, for example, as 58186384 + 620209216 = 7628^2 + 24904^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678395609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 847595 + ... + 848394.

It is an arithmetic number, because the mean of its divisors is an integer number (54328213).

Almost surely, 2^678395600 is an apocalyptic number.

It is an amenable number.

678395600 is an abundant number, since it is smaller than the sum of its proper divisors (951450790).

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

678395600 is a wasteful number, since it uses less digits than its factorization.

678395600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696007 (or 1695996 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 678395600 is about 26046.0284880440. The cubic root of 678395600 is about 878.6737943543.

The spelling of 678395600 in words is "six hundred seventy-eight million, three hundred ninety-five thousand, six hundred".