678903033601 has 4 divisors (see below), whose sum is σ = 731126343892. Its totient is φ = 626679723312.

The previous prime is 678903033593. The next prime is 678903033607. The reversal of 678903033601 is 106330309876.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 203830578576 + 475072455025 = 451476^2 + 689255^2 .

It is a cyclic number.

It is not a de Polignac number, because 678903033601 - 2³ = 678903033593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (678903033607) 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 in 3 ways as a sum of consecutive naturals, for example, 26111655126 + ... + 26111655151.

It is an arithmetic number, because the mean of its divisors is an integer number (182781585973).

Almost surely, 2^678903033601 is an apocalyptic number.

It is an amenable number.

678903033601 is a deficient number, since it is larger than the sum of its proper divisors (52223310291).

678903033601 is a wasteful number, since it uses less digits than its factorization.

678903033601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52223310290.

The product of its (nonzero) digits is 489888, while the sum is 46.

The spelling of 678903033601 in words is "six hundred seventy-eight billion, nine hundred three million, thirty-three thousand, six hundred one".