260355811 has 4 divisors (see below), whose sum is σ = 263492712. Its totient is φ = 257218912.

The previous prime is 260355779. The next prime is 260355829. The reversal of 260355811 is 118553062.

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

It is a cyclic number.

It is not a de Polignac number, because 260355811 - 2⁵ = 260355779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260355911) 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, 1568326 + ... + 1568491.

It is an arithmetic number, because the mean of its divisors is an integer number (65873178).

Almost surely, 2^260355811 is an apocalyptic number.

260355811 is a deficient number, since it is larger than the sum of its proper divisors (3136901).

260355811 is an equidigital number, since it uses as much as digits as its factorization.

260355811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3136900.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 260355811 is about 16135.5449551603. The cubic root of 260355811 is about 638.5414465632.

The spelling of 260355811 in words is "two hundred sixty million, three hundred fifty-five thousand, eight hundred eleven".