678352159 has 2 divisors, whose sum is σ = 678352160. Its totient is φ = 678352158.

The previous prime is 678352121. The next prime is 678352187. The reversal of 678352159 is 951253876.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 678352159 - 2⁹ = 678351647 is a prime.

It is a super-2 number, since 2×678352159² = 920323303239922562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (678352189) by changing a digit.

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 as a sum of consecutive naturals, namely, 339176079 + 339176080.

It is an arithmetic number, because the mean of its divisors is an integer number (339176080).

Almost surely, 2^678352159 is an apocalyptic number.

678352159 is a deficient number, since it is larger than the sum of its proper divisors (1).

678352159 is an equidigital number, since it uses as much as digits as its factorization.

678352159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 46.

The square root of 678352159 is about 26045.1945471713. The cubic root of 678352159 is about 878.6550386887.

The spelling of 678352159 in words is "six hundred seventy-eight million, three hundred fifty-two thousand, one hundred fifty-nine".