681335 has 8 divisors (see below), whose sum is σ = 836880. Its totient is φ = 532224.

The previous prime is 681311. The next prime is 681337. The reversal of 681335 is 533186.

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

It is a cyclic number.

It is not a de Polignac number, because 681335 - 2⁶ = 681271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681337) 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, 1370 + ... + 1799.

It is an arithmetic number, because the mean of its divisors is an integer number (104610).

2⁶⁸¹³³⁵ is an apocalyptic number.

681335 is a deficient number, since it is larger than the sum of its proper divisors (155545).

681335 is a wasteful number, since it uses less digits than its factorization.

681335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3217.

The product of its digits is 2160, while the sum is 26.

The square root of 681335 is about 825.4301908702. The cubic root of 681335 is about 87.9941025662.

The spelling of 681335 in words is "six hundred eighty-one thousand, three hundred thirty-five".