681117 has 8 divisors (see below), whose sum is σ = 918720. Its totient is φ = 448800.

The previous prime is 681113. The next prime is 681127. The reversal of 681117 is 711186.

681117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 681117 - 2² = 681113 is a prime.

681117 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1009 + ... + 1542.

It is an arithmetic number, because the mean of its divisors is an integer number (114840).

2⁶⁸¹¹¹⁷ is an apocalyptic number.

It is an amenable number.

681117 is a deficient number, since it is larger than the sum of its proper divisors (237603).

681117 is a wasteful number, since it uses less digits than its factorization.

681117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2643.

The product of its digits is 336, while the sum is 24.

The square root of 681117 is about 825.2981279513. The cubic root of 681117 is about 87.9847166985.

The spelling of 681117 in words is "six hundred eighty-one thousand, one hundred seventeen".