260644 has 12 divisors (see below), whose sum is σ = 483084. Its totient is φ = 122624.

The previous prime is 260629. The next prime is 260647. The reversal of 260644 is 446062.

260644 = T₃₅₉ + T₃₆₀ + ... + T₃₆₂.

It can be written as a sum of positive squares in 2 ways, for example, as 129600 + 131044 = 360^2 + 362^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260647) 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, 1849 + ... + 1984.

It is an arithmetic number, because the mean of its divisors is an integer number (40257).

2²⁶⁰⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

260644 is a deficient number, since it is larger than the sum of its proper divisors (222440).

260644 is a wasteful number, since it uses less digits than its factorization.

260644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3854 (or 3852 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 260644 is about 510.5330547575. The cubic root of 260644 is about 63.8776961139.

The spelling of 260644 in words is "two hundred sixty thousand, six hundred forty-four".