260913287 has 4 divisors (see below), whose sum is σ = 265190616. Its totient is φ = 256635960.

The previous prime is 260913259. The next prime is 260913337. The reversal of 260913287 is 782319062.

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 260913287 - 2¹² = 260909191 is a prime.

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 260913287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260916287) 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, 2138573 + ... + 2138694.

It is an arithmetic number, because the mean of its divisors is an integer number (66297654).

Almost surely, 2^260913287 is an apocalyptic number.

260913287 is a deficient number, since it is larger than the sum of its proper divisors (4277329).

260913287 is an equidigital number, since it uses as much as digits as its factorization.

260913287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4277328.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 260913287 is about 16152.8104984860. The cubic root of 260913287 is about 638.9968717269.

The spelling of 260913287 in words is "two hundred sixty million, nine hundred thirteen thousand, two hundred eighty-seven".