678323548787 has 2 divisors, whose sum is σ = 678323548788. Its totient is φ = 678323548786.

The previous prime is 678323548783. The next prime is 678323548817. The reversal of 678323548787 is 787845323876.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 678323548787 - 2² = 678323548783 is a prime.

It is not a weakly prime, because it can be changed into another prime (678323548783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339161774393 + 339161774394.

It is an arithmetic number, because the mean of its divisors is an integer number (339161774394).

Almost surely, 2^678323548787 is an apocalyptic number.

678323548787 is a deficient number, since it is larger than the sum of its proper divisors (1).

678323548787 is an equidigital number, since it uses as much as digits as its factorization.

678323548787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 379330560, while the sum is 68.

The spelling of 678323548787 in words is "six hundred seventy-eight billion, three hundred twenty-three million, five hundred forty-eight thousand, seven hundred eighty-seven".