677661750056 has 32 divisors (see below), whose sum is σ = 1288157730600. Its totient is φ = 334154004480.

The previous prime is 677661750049. The next prime is 677661750067. The reversal of 677661750056 is 650057166776.

It can be written as a sum of positive squares in 4 ways, for example, as 648943024900 + 28718725156 = 805570^2 + 169466^2 .

It is a junction number, because it is equal to n+sod(n) for n = 677661749983 and 677661750010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5971250 + ... + 6083678.

Almost surely, 2^677661750056 is an apocalyptic number.

It is an amenable number.

677661750056 is a deficient number, since it is larger than the sum of its proper divisors (610495980544).

677661750056 is a wasteful number, since it uses less digits than its factorization.

677661750056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122829 (or 122825 counting only the distinct ones).

The product of its (nonzero) digits is 11113200, while the sum is 56.

The spelling of 677661750056 in words is "six hundred seventy-seven billion, six hundred sixty-one million, seven hundred fifty thousand, fifty-six".