678560835557 has 32 divisors (see below), whose sum is σ = 753651993600. Its totient is φ = 605777356800.

The previous prime is 678560835523. The next prime is 678560835569. The reversal of 678560835557 is 755538065876.

It is not a de Polignac number, because 678560835557 - 2¹⁰ = 678560834533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 678560835493 and 678560835502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678560835577) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 417061778 + ... + 417063404.

It is an arithmetic number, because the mean of its divisors is an integer number (23551624800).

Almost surely, 2^678560835557 is an apocalyptic number.

It is an amenable number.

678560835557 is a deficient number, since it is larger than the sum of its proper divisors (75091158043).

678560835557 is a wasteful number, since it uses less digits than its factorization.

678560835557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3497.

The product of its (nonzero) digits is 211680000, while the sum is 65.

The spelling of 678560835557 in words is "six hundred seventy-eight billion, five hundred sixty million, eight hundred thirty-five thousand, five hundred fifty-seven".