681534248 has 16 divisors (see below), whose sum is σ = 1293274080. Its totient is φ = 336661168.

The previous prime is 681534241. The next prime is 681534281. The reversal of 681534248 is 842435186.

It is not an unprimeable number, because it can be changed into a prime (681534241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 512540 + ... + 513867.

It is an arithmetic number, because the mean of its divisors is an integer number (80829630).

Almost surely, 2^681534248 is an apocalyptic number.

It is an amenable number.

681534248 is a deficient number, since it is larger than the sum of its proper divisors (611739832).

681534248 is a wasteful number, since it uses less digits than its factorization.

681534248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026496 (or 1026492 counting only the distinct ones).

The product of its digits is 184320, while the sum is 41.

The square root of 681534248 is about 26106.2109085175. The cubic root of 681534248 is about 880.0267932614.

The spelling of 681534248 in words is "six hundred eighty-one million, five hundred thirty-four thousand, two hundred forty-eight".