681048 has 40 divisors (see below), whose sum is σ = 1909380. Its totient is φ = 226800.

The previous prime is 681047. The next prime is 681049. The reversal of 681048 is 840186.

It is an interprime number because it is at equal distance from previous prime (681047) and next prime (681049).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681041) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 123 + ... + 1173.

2⁶⁸¹⁰⁴⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 681048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (954690).

681048 is an abundant number, since it is smaller than the sum of its proper divisors (1228332).

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

681048 is a wasteful number, since it uses less digits than its factorization.

681048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069 (or 1056 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 681048 is about 825.2563238170. The cubic root of 681048 is about 87.9817455249.

The spelling of 681048 in words is "six hundred eighty-one thousand, forty-eight".