260656541 has 2 divisors, whose sum is σ = 260656542. Its totient is φ = 260656540.

The previous prime is 260656537. The next prime is 260656559. The reversal of 260656541 is 145656062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214007641 + 46648900 = 14629^2 + 6830^2 .

It is a cyclic number.

It is not a de Polignac number, because 260656541 - 2² = 260656537 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260656511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130328270 + 130328271.

It is an arithmetic number, because the mean of its divisors is an integer number (130328271).

Almost surely, 2^260656541 is an apocalyptic number.

It is an amenable number.

260656541 is a deficient number, since it is larger than the sum of its proper divisors (1).

260656541 is an equidigital number, since it uses as much as digits as its factorization.

260656541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 260656541 is about 16144.8611328806. The cubic root of 260656541 is about 638.7872059853.

The spelling of 260656541 in words is "two hundred sixty million, six hundred fifty-six thousand, five hundred forty-one".