681826208 has 48 divisors (see below), whose sum is σ = 1624359744. Its totient is φ = 275020800.

The previous prime is 681826193. The next prime is 681826213. The reversal of 681826208 is 802628186.

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, 85718 + ... + 93333.

It is an arithmetic number, because the mean of its divisors is an integer number (33840828).

Almost surely, 2^681826208 is an apocalyptic number.

681826208 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

681826208 is an abundant number, since it is smaller than the sum of its proper divisors (942533536).

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

681826208 is a wasteful number, since it uses less digits than its factorization.

681826208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179085 (or 179077 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 681826208 is about 26111.8020825833. The cubic root of 681826208 is about 880.1524391567.

The spelling of 681826208 in words is "six hundred eighty-one million, eight hundred twenty-six thousand, two hundred eight".