678133367 has 2 divisors, whose sum is σ = 678133368. Its totient is φ = 678133366.

The previous prime is 678133321. The next prime is 678133381. The reversal of 678133367 is 763331876.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 678133367 - 2¹² = 678129271 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (678133387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339066683 + 339066684.

It is an arithmetic number, because the mean of its divisors is an integer number (339066684).

Almost surely, 2^678133367 is an apocalyptic number.

678133367 is a deficient number, since it is larger than the sum of its proper divisors (1).

678133367 is an equidigital number, since it uses as much as digits as its factorization.

678133367 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 44.

The square root of 678133367 is about 26040.9939710450. The cubic root of 678133367 is about 878.5605629986.

The spelling of 678133367 in words is "six hundred seventy-eight million, one hundred thirty-three thousand, three hundred sixty-seven".