261703 has 8 divisors (see below), whose sum is σ = 289296. Its totient is φ = 235200.

The previous prime is 261697. The next prime is 261707. The reversal of 261703 is 307162.

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 261703 - 2¹⁷ = 130631 is a prime.

261703 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288 + ... + 778.

It is an arithmetic number, because the mean of its divisors is an integer number (36162).

2²⁶¹⁷⁰³ is an apocalyptic number.

261703 is a deficient number, since it is larger than the sum of its proper divisors (27593).

261703 is a wasteful number, since it uses less digits than its factorization.

261703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 261703 is about 511.5691546604. The cubic root of 261703 is about 63.9640911843.

Adding to 261703 its reverse (307162), we get a palindrome (568865).

The spelling of 261703 in words is "two hundred sixty-one thousand, seven hundred three".