678415416 has 32 divisors (see below), whose sum is σ = 1938330240. Its totient is φ = 193832928.

The previous prime is 678415363. The next prime is 678415421. The reversal of 678415416 is 614514876.

678415416 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 (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2018926 + ... + 2019261.

It is an arithmetic number, because the mean of its divisors is an integer number (60572820).

Almost surely, 2^678415416 is an apocalyptic number.

It is an amenable number.

678415416 is an abundant number, since it is smaller than the sum of its proper divisors (1259914824).

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

678415416 is a wasteful number, since it uses less digits than its factorization.

678415416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4038203 (or 4038199 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 678415416 is about 26046.4088887509. The cubic root of 678415416 is about 878.6823496528.

The spelling of 678415416 in words is "six hundred seventy-eight million, four hundred fifteen thousand, four hundred sixteen".