678048029 has 2 divisors, whose sum is σ = 678048030. Its totient is φ = 678048028.

The previous prime is 678047987. The next prime is 678048061. The reversal of 678048029 is 920840876.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 424442404 + 253605625 = 20602^2 + 15925^2 .

It is a cyclic number.

It is not a de Polignac number, because 678048029 - 2²⁸ = 409612573 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (678048629) 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, 339024014 + 339024015.

It is an arithmetic number, because the mean of its divisors is an integer number (339024015).

Almost surely, 2^678048029 is an apocalyptic number.

It is an amenable number.

678048029 is a deficient number, since it is larger than the sum of its proper divisors (1).

678048029 is an equidigital number, since it uses as much as digits as its factorization.

678048029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 678048029 is about 26039.3553875667. The cubic root of 678048029 is about 878.5237080326.

The spelling of 678048029 in words is "six hundred seventy-eight million, forty-eight thousand, twenty-nine".