260413785 has 20 divisors (see below), whose sum is σ = 466816548. Its totient is φ = 138887136.

The previous prime is 260413781. The next prime is 260413799. The reversal of 260413785 is 587314062.

It can be written as a sum of positive squares in 2 ways, for example, as 102333456 + 158080329 = 10116^2 + 12573^2 .

It is not a de Polignac number, because 260413785 - 2² = 260413781 is a prime.

It is not an unprimeable number, because it can be changed into a prime (260413781) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 321094 + ... + 321903.

Almost surely, 2^260413785 is an apocalyptic number.

It is an amenable number.

260413785 is a deficient number, since it is larger than the sum of its proper divisors (206402763).

260413785 is an equidigital number, since it uses as much as digits as its factorization.

260413785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643014 (or 643005 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 260413785 is about 16137.3413237745. The cubic root of 260413785 is about 638.5888381877.

The spelling of 260413785 in words is "two hundred sixty million, four hundred thirteen thousand, seven hundred eighty-five".