260818 has 4 divisors (see below), whose sum is σ = 391230. Its totient is φ = 130408.

The previous prime is 260809. The next prime is 260849. The reversal of 260818 is 818062.

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

It can be written as a sum of positive squares in only one way, i.e., 199809 + 61009 = 447^2 + 247^2 .

It is a nialpdrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 260792 and 260801.

It is an unprimeable number.

260818 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65203 + ... + 65206.

2²⁶⁰⁸¹⁸ is an apocalyptic number.

260818 is a deficient number, since it is larger than the sum of its proper divisors (130412).

260818 is a wasteful number, since it uses less digits than its factorization.

260818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130411.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 260818 is about 510.7034364482. The cubic root of 260818 is about 63.8919073838.

The spelling of 260818 in words is "two hundred sixty thousand, eight hundred eighteen".