260549987 has 2 divisors, whose sum is σ = 260549988. Its totient is φ = 260549986.

The previous prime is 260549963. The next prime is 260550001. The reversal of 260549987 is 789945062.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 260549987 - 2⁶ = 260549923 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (260549917) 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, 130274993 + 130274994.

It is an arithmetic number, because the mean of its divisors is an integer number (130274994).

Almost surely, 2^260549987 is an apocalyptic number.

260549987 is a deficient number, since it is larger than the sum of its proper divisors (1).

260549987 is an equidigital number, since it uses as much as digits as its factorization.

260549987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The square root of 260549987 is about 16141.5608600903. The cubic root of 260549987 is about 638.7001506741.

The spelling of 260549987 in words is "two hundred sixty million, five hundred forty-nine thousand, nine hundred eighty-seven".