681283800 has 144 divisors (see below), whose sum is σ = 2336948640. Its totient is φ = 177788160.

The previous prime is 681283777. The next prime is 681283829. The reversal of 681283800 is 8382186.

It is a super-2 number, since 2×681283800² = 928295232284880000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 80574 + ... + 88626.

It is an arithmetic number, because the mean of its divisors is an integer number (16228810).

Almost surely, 2^681283800 is an apocalyptic number.

681283800 is a gapful number since it is divisible by the number (60) 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 681283800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1168474320).

681283800 is an abundant number, since it is smaller than the sum of its proper divisors (1655664840).

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

681283800 is a wasteful number, since it uses less digits than its factorization.

681283800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8122 (or 8110 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 681283800 is about 26101.4137548141. The cubic root of 681283800 is about 879.9189835884.

The spelling of 681283800 in words is "six hundred eighty-one million, two hundred eighty-three thousand, eight hundred".