260612405 has 4 divisors (see below), whose sum is σ = 312734892. Its totient is φ = 208489920.

The previous prime is 260612393. The next prime is 260612411. The reversal of 260612405 is 504216062.

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 125843524 + 134768881 = 11218^2 + 11609^2 .

It is not a de Polignac number, because 260612405 - 2²² = 256418101 is a prime.

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, 26061236 + ... + 26061245.

It is an arithmetic number, because the mean of its divisors is an integer number (78183723).

Almost surely, 2^260612405 is an apocalyptic number.

It is an amenable number.

260612405 is a deficient number, since it is larger than the sum of its proper divisors (52122487).

260612405 is an equidigital number, since it uses as much as digits as its factorization.

260612405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52122486.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 260612405 is about 16143.4942004512. The cubic root of 260612405 is about 638.7511494650.

Adding to 260612405 its reverse (504216062), we get a palindrome (764828467).

The spelling of 260612405 in words is "two hundred sixty million, six hundred twelve thousand, four hundred five".