683531 has 4 divisors (see below), whose sum is σ = 687792. Its totient is φ = 679272.

The previous prime is 683513. The next prime is 683567. The reversal of 683531 is 135386.

683531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-683531 is a prime.

It is a super-2 number, since 2×683531² = 934429255922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 683531.

It is not an unprimeable number, because it can be changed into a prime (683591) 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, 1880 + ... + 2213.

It is an arithmetic number, because the mean of its divisors is an integer number (171948).

2⁶⁸³⁵³¹ is an apocalyptic number.

683531 is a deficient number, since it is larger than the sum of its proper divisors (4261).

683531 is a wasteful number, since it uses less digits than its factorization.

683531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4260.

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

The square root of 683531 is about 826.7593362037. The cubic root of 683531 is about 88.0885386444.

The spelling of 683531 in words is "six hundred eighty-three thousand, five hundred thirty-one".