260412805 has 4 divisors (see below), whose sum is σ = 312495372. Its totient is φ = 208330240.

The previous prime is 260412799. The next prime is 260412809. The reversal of 260412805 is 508214062.

260412805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 178944129 + 81468676 = 13377^2 + 9026^2 .

It is not a de Polignac number, because 260412805 - 2¹⁵ = 260380037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260412809) 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, 26041276 + ... + 26041285.

It is an arithmetic number, because the mean of its divisors is an integer number (78123843).

Almost surely, 2^260412805 is an apocalyptic number.

It is an amenable number.

260412805 is a deficient number, since it is larger than the sum of its proper divisors (52082567).

260412805 is an equidigital number, since it uses as much as digits as its factorization.

260412805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52082566.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 260412805 is about 16137.3109593885. The cubic root of 260412805 is about 638.5880371320.

Adding to 260412805 its reverse (508214062), we get a palindrome (768626867).

The spelling of 260412805 in words is "two hundred sixty million, four hundred twelve thousand, eight hundred five".