678420050 has 48 divisors (see below), whose sum is σ = 1573238592. Its totient is φ = 211454400.

The previous prime is 678420031. The next prime is 678420077. The reversal of 678420050 is 50024876.

It is a junction number, because it is equal to n+sod(n) for n = 678419989 and 678420016.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 84257 + ... + 91956.

It is an arithmetic number, because the mean of its divisors is an integer number (32775804).

Almost surely, 2^678420050 is an apocalyptic number.

678420050 is an abundant number, since it is smaller than the sum of its proper divisors (894818542).

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

678420050 is a wasteful number, since it uses less digits than its factorization.

678420050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176243 (or 176238 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 678420050 is about 26046.4978451998. The cubic root of 678420050 is about 878.6843502975.

The spelling of 678420050 in words is "six hundred seventy-eight million, four hundred twenty thousand, fifty".