681033 has 4 divisors (see below), whose sum is σ = 908048. Its totient is φ = 454020.

The previous prime is 681019. The next prime is 681041. The reversal of 681033 is 330186.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 681033 - 2⁵ = 681001 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (681833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113503 + ... + 113508.

It is an arithmetic number, because the mean of its divisors is an integer number (227012).

2⁶⁸¹⁰³³ is an apocalyptic number.

It is an amenable number.

681033 is a deficient number, since it is larger than the sum of its proper divisors (227015).

681033 is a wasteful number, since it uses less digits than its factorization.

681033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227014.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 681033 is about 825.2472356815. The cubic root of 681033 is about 87.9810995910.

The spelling of 681033 in words is "six hundred eighty-one thousand, thirty-three".