260405603 has 2 divisors, whose sum is σ = 260405604. Its totient is φ = 260405602.

The previous prime is 260405597. The next prime is 260405633. The reversal of 260405603 is 306504062.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 260405603 - 2¹⁰ = 260404579 is a prime.

It is a super-2 number, since 2×260405603² = 135622156147587218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (260405633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130202801 + 130202802.

It is an arithmetic number, because the mean of its divisors is an integer number (130202802).

Almost surely, 2^260405603 is an apocalyptic number.

260405603 is a deficient number, since it is larger than the sum of its proper divisors (1).

260405603 is an equidigital number, since it uses as much as digits as its factorization.

260405603 is an evil number, because the sum of its binary digits is even.

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

The square root of 260405603 is about 16137.0878103826. The cubic root of 260405603 is about 638.5821501283.

Adding to 260405603 its reverse (306504062), we get a palindrome (566909665).

The spelling of 260405603 in words is "two hundred sixty million, four hundred five thousand, six hundred three".