260406281 has 2 divisors, whose sum is σ = 260406282. Its totient is φ = 260406280.

The previous prime is 260406277. The next prime is 260406317. The reversal of 260406281 is 182604062.

260406281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 179694025 + 80712256 = 13405^2 + 8984^2 .

It is a cyclic number.

It is not a de Polignac number, because 260406281 - 2² = 260406277 is a prime.

It is a super-2 number, since 2×260406281² = 135622862368501922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_14216816 and since 260406281 and 14216816 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (260406241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130203140 + 130203141.

It is an arithmetic number, because the mean of its divisors is an integer number (130203141).

Almost surely, 2^260406281 is an apocalyptic number.

It is an amenable number.

260406281 is a deficient number, since it is larger than the sum of its proper divisors (1).

260406281 is an equidigital number, since it uses as much as digits as its factorization.

260406281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 260406281 is about 16137.1088178769. The cubic root of 260406281 is about 638.5827043385.

The spelling of 260406281 in words is "two hundred sixty million, four hundred six thousand, two hundred eighty-one".