261076 has 6 divisors (see below), whose sum is σ = 456890. Its totient is φ = 130536.

The previous prime is 261071. The next prime is 261077. The reversal of 261076 is 670162.

It can be written as a sum of positive squares in only one way, i.e., 184900 + 76176 = 430^2 + 276^2 .

It is a super-3 number, since 3×261076³ = 53385351333140928, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261071) 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, 32631 + ... + 32638.

2²⁶¹⁰⁷⁶ is an apocalyptic number.

It is an amenable number.

261076 is a deficient number, since it is larger than the sum of its proper divisors (195814).

261076 is a wasteful number, since it uses less digits than its factorization.

261076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65273 (or 65271 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 261076 is about 510.9559667917. The cubic root of 261076 is about 63.9129676375.

The spelling of 261076 in words is "two hundred sixty-one thousand, seventy-six".