260605013 has 4 divisors (see below), whose sum is σ = 260729100. Its totient is φ = 260480928.

The previous prime is 260604997. The next prime is 260605039. The reversal of 260605013 is 310506062.

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

It can be written as a sum of positive squares in 2 ways, for example, as 25381444 + 235223569 = 5038^2 + 15337^2 .

It is a cyclic number.

It is not a de Polignac number, because 260605013 - 2⁴ = 260604997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 260605013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260605043) 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, 58838 + ... + 63111.

It is an arithmetic number, because the mean of its divisors is an integer number (65182275).

Almost surely, 2^260605013 is an apocalyptic number.

It is an amenable number.

260605013 is a deficient number, since it is larger than the sum of its proper divisors (124087).

260605013 is a wasteful number, since it uses less digits than its factorization.

260605013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124086.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 260605013 is about 16143.2652521106. The cubic root of 260605013 is about 638.7451102371.

The spelling of 260605013 in words is "two hundred sixty million, six hundred five thousand, thirteen".