678613027 has 2 divisors, whose sum is σ = 678613028. Its totient is φ = 678613026.

The previous prime is 678612989. The next prime is 678613031. The reversal of 678613027 is 720316876.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 678613027 - 2⁷ = 678612899 is a prime.

It is not a weakly prime, because it can be changed into another prime (678613097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339306513 + 339306514.

It is an arithmetic number, because the mean of its divisors is an integer number (339306514).

Almost surely, 2^678613027 is an apocalyptic number.

678613027 is a deficient number, since it is larger than the sum of its proper divisors (1).

678613027 is an equidigital number, since it uses as much as digits as its factorization.

678613027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 678613027 is about 26050.2020529592. The cubic root of 678613027 is about 878.7676565003.

The spelling of 678613027 in words is "six hundred seventy-eight million, six hundred thirteen thousand, twenty-seven".