260201605 has 4 divisors (see below), whose sum is σ = 312241932. Its totient is φ = 208161280.

The previous prime is 260201593. The next prime is 260201611. The reversal of 260201605 is 506102062.

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 174398436 + 85803169 = 13206^2 + 9263^2 .

It is not a de Polignac number, because 260201605 - 2⁵ = 260201573 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 26020156 + ... + 26020165.

It is an arithmetic number, because the mean of its divisors is an integer number (78060483).

Almost surely, 2^260201605 is an apocalyptic number.

It is an amenable number.

260201605 is a deficient number, since it is larger than the sum of its proper divisors (52040327).

260201605 is an equidigital number, since it uses as much as digits as its factorization.

260201605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52040326.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 260201605 is about 16130.7657908730. The cubic root of 260201605 is about 638.4153545450.

Adding to 260201605 its reverse (506102062), we get a palindrome (766303667).

The spelling of 260201605 in words is "two hundred sixty million, two hundred one thousand, six hundred five".