681038 has 4 divisors (see below), whose sum is σ = 1021560. Its totient is φ = 340518.

The previous prime is 681019. The next prime is 681041. The reversal of 681038 is 830186.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 680998 and 681016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170258 + ... + 170261.

It is an arithmetic number, because the mean of its divisors is an integer number (255390).

2⁶⁸¹⁰³⁸ is an apocalyptic number.

681038 is a deficient number, since it is larger than the sum of its proper divisors (340522).

681038 is a wasteful number, since it uses less digits than its factorization.

681038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340521.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 681038 is about 825.2502650711. The cubic root of 681038 is about 87.9813149034.

The spelling of 681038 in words is "six hundred eighty-one thousand, thirty-eight".