678196057 has 16 divisors (see below), whose sum is σ = 847592064. Its totient is φ = 527184000.

The previous prime is 678196037. The next prime is 678196069. The reversal of 678196057 is 750691876.

678196057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 678196057 - 2¹¹ = 678194009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 678196057.

It is not an unprimeable number, because it can be changed into a prime (678196007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21957 + ... + 42877.

It is an arithmetic number, because the mean of its divisors is an integer number (52974504).

Almost surely, 2^678196057 is an apocalyptic number.

It is an amenable number.

678196057 is a deficient number, since it is larger than the sum of its proper divisors (169396007).

678196057 is a wasteful number, since it uses less digits than its factorization.

678196057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21360.

The product of its (nonzero) digits is 635040, while the sum is 49.

The square root of 678196057 is about 26042.1976223206. The cubic root of 678196057 is about 878.5876349912.

The spelling of 678196057 in words is "six hundred seventy-eight million, one hundred ninety-six thousand, fifty-seven".