260564149 has 2 divisors, whose sum is σ = 260564150. Its totient is φ = 260564148.

The previous prime is 260564131. The next prime is 260564189. The reversal of 260564149 is 941465062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 249956100 + 10608049 = 15810^2 + 3257^2 .

It is a cyclic number.

It is not a de Polignac number, because 260564149 - 2²³ = 252175541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260564189) 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 as a sum of consecutive naturals, namely, 130282074 + 130282075.

It is an arithmetic number, because the mean of its divisors is an integer number (130282075).

Almost surely, 2^260564149 is an apocalyptic number.

It is an amenable number.

260564149 is a deficient number, since it is larger than the sum of its proper divisors (1).

260564149 is an equidigital number, since it uses as much as digits as its factorization.

260564149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 260564149 is about 16141.9995353736. Note that the first 3 decimals coincide. The cubic root of 260564149 is about 638.7117224877.

The spelling of 260564149 in words is "two hundred sixty million, five hundred sixty-four thousand, one hundred forty-nine".