681852600 has 384 divisors, whose sum is σ = 2762323200. Its totient is φ = 152409600.

The previous prime is 681852583. The next prime is 681852607. The reversal of 681852600 is 6258186.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681852607) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 771759 + ... + 772641.

It is an arithmetic number, because the mean of its divisors is an integer number (7193550).

Almost surely, 2^681852600 is an apocalyptic number.

681852600 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 681852600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1381161600).

681852600 is an abundant number, since it is smaller than the sum of its proper divisors (2080470600).

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

681852600 is a wasteful number, since it uses less digits than its factorization.

681852600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932 (or 917 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 681852600 is about 26112.3074430430. The cubic root of 681852600 is about 880.1637952683.

The spelling of 681852600 in words is "six hundred eighty-one million, eight hundred fifty-two thousand, six hundred".