678842500 has 60 divisors (see below), whose sum is σ = 1696606912. Its totient is φ = 232740000.

The previous prime is 678842477. The next prime is 678842509. The reversal of 678842500 is 5248876.

It is not an unprimeable number, because it can be changed into a prime (678842509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1896 + ... + 36895.

Almost surely, 2^678842500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678842500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (848303456).

678842500 is an abundant number, since it is smaller than the sum of its proper divisors (1017764412).

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

678842500 is a wasteful number, since it uses less digits than its factorization.

678842500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38822 (or 38805 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 678842500 is about 26054.6061186885. The cubic root of 678842500 is about 878.8666971007.

The spelling of 678842500 in words is "six hundred seventy-eight million, eight hundred forty-two thousand, five hundred".