260406403 has 4 divisors (see below), whose sum is σ = 263973688. Its totient is φ = 256839120.

The previous prime is 260406383. The next prime is 260406427. The reversal of 260406403 is 304604062.

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 260406403 - 2⁵ = 260406371 is a prime.

It is a super-2 number, since 2×260406403² = 135622989446796818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260406473) 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, 1783533 + ... + 1783678.

It is an arithmetic number, because the mean of its divisors is an integer number (65993422).

Almost surely, 2^260406403 is an apocalyptic number.

260406403 is a deficient number, since it is larger than the sum of its proper divisors (3567285).

260406403 is an equidigital number, since it uses as much as digits as its factorization.

260406403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3567284.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 260406403 is about 16137.1125979836. The cubic root of 260406403 is about 638.5828040635.

The spelling of 260406403 in words is "two hundred sixty million, four hundred six thousand, four hundred three".