681482808 has 144 divisors (see below), whose sum is σ = 2034931080. Its totient is φ = 213622272.

The previous prime is 681482777. The next prime is 681482819. The reversal of 681482808 is 808284186.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 561210 + ... + 562422.

Almost surely, 2^681482808 is an apocalyptic number.

681482808 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 681482808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1017465540).

681482808 is an abundant number, since it is smaller than the sum of its proper divisors (1353448272).

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

681482808 is a wasteful number, since it uses less digits than its factorization.

681482808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268 (or 1235 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 45.

The square root of 681482808 is about 26105.2256837592. The cubic root of 681482808 is about 880.0046521793.

The spelling of 681482808 in words is "six hundred eighty-one million, four hundred eighty-two thousand, eight hundred eight".