681885548 has 12 divisors (see below), whose sum is σ = 1231793472. Its totient is φ = 329944560.

The previous prime is 681885499. The next prime is 681885551. The reversal of 681885548 is 845588186.

It is a self number, because there is not a number n which added to its sum of digits gives 681885548.

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, 2749415 + ... + 2749662.

It is an arithmetic number, because the mean of its divisors is an integer number (102649456).

Almost surely, 2^681885548 is an apocalyptic number.

It is an amenable number.

681885548 is a deficient number, since it is larger than the sum of its proper divisors (549907924).

681885548 is a wasteful number, since it uses less digits than its factorization.

681885548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5499112 (or 5499110 counting only the distinct ones).

The product of its digits is 2457600, while the sum is 53.

The square root of 681885548 is about 26112.9383256653. The cubic root of 681885548 is about 880.1779719245.

The spelling of 681885548 in words is "six hundred eighty-one million, eight hundred eighty-five thousand, five hundred forty-eight".