681054 has 32 divisors (see below), whose sum is σ = 1575936. Its totient is φ = 193920.

The previous prime is 681049. The next prime is 681061. The reversal of 681054 is 450186.

681054 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

681054 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 819 + ... + 1425.

It is an arithmetic number, because the mean of its divisors is an integer number (49248).

2⁶⁸¹⁰⁵⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 681054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (787968).

681054 is an abundant number, since it is smaller than the sum of its proper divisors (894882).

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

681054 is a wasteful number, since it uses less digits than its factorization.

681054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 681054 is about 825.2599590432. The cubic root of 681054 is about 87.9820038958.

The spelling of 681054 in words is "six hundred eighty-one thousand, fifty-four".