261707 has 2 divisors, whose sum is σ = 261708. Its totient is φ = 261706.

The previous prime is 261697. The next prime is 261713. The reversal of 261707 is 707162.

It is a happy number.

261707 is nontrivially palindromic in base 6.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 261707 - 2⁶ = 261643 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 261707.

It is not a weakly prime, because it can be changed into another prime (261757) 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 as a sum of consecutive naturals, namely, 130853 + 130854.

It is an arithmetic number, because the mean of its divisors is an integer number (130854).

2²⁶¹⁷⁰⁷ is an apocalyptic number.

261707 is a deficient number, since it is larger than the sum of its proper divisors (1).

261707 is an equidigital number, since it uses as much as digits as its factorization.

261707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 261707 is about 511.5730641854. The cubic root of 261707 is about 63.9644170691.

Adding to 261707 its reverse (707162), we get a palindrome (968869).

The spelling of 261707 in words is "two hundred sixty-one thousand, seven hundred seven".