260640503 has 8 divisors (see below), whose sum is σ = 265019040. Its totient is φ = 256281760.

The previous prime is 260640491. The next prime is 260640509. The reversal of 260640503 is 305046062.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 260640503 - 2¹⁰ = 260639479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260640509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22901 + ... + 32337.

It is an arithmetic number, because the mean of its divisors is an integer number (33127380).

Almost surely, 2^260640503 is an apocalyptic number.

260640503 is a deficient number, since it is larger than the sum of its proper divisors (4378537).

260640503 is an equidigital number, since it uses as much as digits as its factorization.

260640503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9897.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 260640503 is about 16144.3644346874. The cubic root of 260640503 is about 638.7741043519.

Adding to 260640503 its reverse (305046062), we get a palindrome (565686565).

The spelling of 260640503 in words is "two hundred sixty million, six hundred forty thousand, five hundred three".