678800310623 has 2 divisors, whose sum is σ = 678800310624. Its totient is φ = 678800310622.

The previous prime is 678800310619. The next prime is 678800310631. The reversal of 678800310623 is 326013008876.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 678800310623 - 2² = 678800310619 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (678800310653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339400155311 + 339400155312.

It is an arithmetic number, because the mean of its divisors is an integer number (339400155312).

Almost surely, 2^678800310623 is an apocalyptic number.

678800310623 is a deficient number, since it is larger than the sum of its proper divisors (1).

678800310623 is an equidigital number, since it uses as much as digits as its factorization.

678800310623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 678800310623 in words is "six hundred seventy-eight billion, eight hundred million, three hundred ten thousand, six hundred twenty-three".