681233 has 8 divisors (see below), whose sum is σ = 783552. Its totient is φ = 580176.

The previous prime is 681229. The next prime is 681251. The reversal of 681233 is 332186.

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 681233 - 2² = 681229 is a prime.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 681199 and 681208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681253) 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, 1991 + ... + 2307.

It is an arithmetic number, because the mean of its divisors is an integer number (97944).

2⁶⁸¹²³³ is an apocalyptic number.

It is an amenable number.

681233 is a deficient number, since it is larger than the sum of its proper divisors (102319).

681233 is a wasteful number, since it uses less digits than its factorization.

681233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631.

The product of its digits is 864, while the sum is 23.

The square root of 681233 is about 825.3684025937. The cubic root of 681233 is about 87.9897112627.

The spelling of 681233 in words is "six hundred eighty-one thousand, two hundred thirty-three".