681346808 has 32 divisors (see below), whose sum is σ = 1366094160. Its totient is φ = 317452800.

The previous prime is 681346769. The next prime is 681346811. The reversal of 681346808 is 808643186.

It is a congruent number.

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, 11066 + ... + 38537.

Almost surely, 2^681346808 is an apocalyptic number.

681346808 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

681346808 is an abundant number, since it is smaller than the sum of its proper divisors (684747352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

681346808 is a wasteful number, since it uses less digits than its factorization.

681346808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49727 (or 49723 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 44.

The square root of 681346808 is about 26102.6207113385. The cubic root of 681346808 is about 879.9461089587.

The spelling of 681346808 in words is "six hundred eighty-one million, three hundred forty-six thousand, eight hundred eight".