678046516 has 48 divisors (see below), whose sum is σ = 1389024000. Its totient is φ = 289488864.

The previous prime is 678046507. The next prime is 678046517. The reversal of 678046516 is 615640876.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678046517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 434145 + ... + 435703.

It is an arithmetic number, because the mean of its divisors is an integer number (28938000).

Almost surely, 2^678046516 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 678046516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (694512000).

678046516 is an abundant number, since it is smaller than the sum of its proper divisors (710977484).

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

678046516 is a wasteful number, since it uses less digits than its factorization.

678046516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901 (or 1885 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 678046516 is about 26039.3263353720. The cubic root of 678046516 is about 878.5230545846.

The spelling of 678046516 in words is "six hundred seventy-eight million, forty-six thousand, five hundred sixteen".