681673348 has 12 divisors (see below), whose sum is σ = 1225169932. Its totient is φ = 331624800.

The previous prime is 681673319. The next prime is 681673357. The reversal of 681673348 is 843376186.

It can be written as a sum of positive squares in 2 ways, for example, as 423042624 + 258630724 = 20568^2 + 16082^2 .

It is a junction number, because it is equal to n+sod(n) for n = 681673298 and 681673307.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2302803 + ... + 2303098.

Almost surely, 2^681673348 is an apocalyptic number.

It is an amenable number.

681673348 is a deficient number, since it is larger than the sum of its proper divisors (543496584).

681673348 is a wasteful number, since it uses less digits than its factorization.

681673348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4605942 (or 4605940 counting only the distinct ones).

The product of its digits is 580608, while the sum is 46.

The square root of 681673348 is about 26108.8748895850. The cubic root of 681673348 is about 880.0866598541.

The spelling of 681673348 in words is "six hundred eighty-one million, six hundred seventy-three thousand, three hundred forty-eight".