681093 has 24 divisors (see below), whose sum is σ = 1185600. Its totient is φ = 368064.

The previous prime is 681091. The next prime is 681113. The reversal of 681093 is 390186.

It is not a de Polignac number, because 681093 - 2¹ = 681091 is a prime.

681093 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681091) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 913 + ... + 1481.

It is an arithmetic number, because the mean of its divisors is an integer number (49400).

2⁶⁸¹⁰⁹³ is an apocalyptic number.

681093 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

681093 is a deficient number, since it is larger than the sum of its proper divisors (504507).

681093 is a wasteful number, since it uses less digits than its factorization.

681093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601 (or 598 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 681093 is about 825.2835876231. The cubic root of 681093 is about 87.9836832695.

It can be divided in two parts, 6810 and 93, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 681093 in words is "six hundred eighty-one thousand, ninety-three".