681476250 has 160 divisors (see below), whose sum is σ = 2097228672. Its totient is φ = 143712000.

The previous prime is 681476239. The next prime is 681476267. The reversal of 681476250 is 52674186.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 681476199 and 681476208.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 340252 + ... + 342248.

Almost surely, 2^681476250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 681476250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1048614336).

681476250 is an abundant number, since it is smaller than the sum of its proper divisors (1415752422).

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

681476250 is a wasteful number, since it uses less digits than its factorization.

681476250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042 (or 2027 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 681476250 is about 26105.1000764218. The cubic root of 681476250 is about 880.0018293695.

The spelling of 681476250 in words is "six hundred eighty-one million, four hundred seventy-six thousand, two hundred fifty".