681274676 has 6 divisors (see below), whose sum is σ = 1192230690. Its totient is φ = 340637336.

The previous prime is 681274661. The next prime is 681274679. The reversal of 681274676 is 676472186.

It is a happy number.

681274676 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 650760100 + 30514576 = 25510^2 + 5524^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 681274676.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681274679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85159331 + ... + 85159338.

It is an arithmetic number, because the mean of its divisors is an integer number (198705115).

Almost surely, 2^681274676 is an apocalyptic number.

It is an amenable number.

681274676 is a deficient number, since it is larger than the sum of its proper divisors (510956014).

681274676 is a wasteful number, since it uses less digits than its factorization.

681274676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170318673 (or 170318671 counting only the distinct ones).

The product of its digits is 677376, while the sum is 47.

The square root of 681274676 is about 26101.2389744242. The cubic root of 681274676 is about 879.9150555060.

The spelling of 681274676 in words is "six hundred eighty-one million, two hundred seventy-four thousand, six hundred seventy-six".