260020535 has 4 divisors (see below), whose sum is σ = 312024648. Its totient is φ = 208016424.

The previous prime is 260020507. The next prime is 260020549. The reversal of 260020535 is 535020062.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 535020062 = 2 ⋅267510031.

It is a cyclic number.

It is not a de Polignac number, because 260020535 - 2²⁰ = 258971959 is a prime.

It is a super-2 number, since 2×260020535² = 135221357243372450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 260020535.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26002049 + ... + 26002058.

It is an arithmetic number, because the mean of its divisors is an integer number (78006162).

Almost surely, 2^260020535 is an apocalyptic number.

260020535 is a deficient number, since it is larger than the sum of its proper divisors (52004113).

260020535 is an equidigital number, since it uses as much as digits as its factorization.

260020535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52004112.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 260020535 is about 16125.1522473433. The cubic root of 260020535 is about 638.2672326136.

Adding to 260020535 its reverse (535020062), we get a palindrome (795040597).

The spelling of 260020535 in words is "two hundred sixty million, twenty thousand, five hundred thirty-five".