678470927 has 2 divisors, whose sum is σ = 678470928. Its totient is φ = 678470926.

The previous prime is 678470893. The next prime is 678470953. The reversal of 678470927 is 729074876.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 678470927 - 2²⁰ = 677422351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (678470977) 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 as a sum of consecutive naturals, namely, 339235463 + 339235464.

It is an arithmetic number, because the mean of its divisors is an integer number (339235464).

Almost surely, 2^678470927 is an apocalyptic number.

678470927 is a deficient number, since it is larger than the sum of its proper divisors (1).

678470927 is an equidigital number, since it uses as much as digits as its factorization.

678470927 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1185408, while the sum is 50.

The square root of 678470927 is about 26047.4744841031. The cubic root of 678470927 is about 878.7063149128.

The spelling of 678470927 in words is "six hundred seventy-eight million, four hundred seventy thousand, nine hundred twenty-seven".