1266210487 has 2 divisors, whose sum is σ = 1266210488. Its totient is φ = 1266210486.

The previous prime is 1266210481. The next prime is 1266210511. The reversal of 1266210487 is 7840126621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1266210487 - 2⁷ = 1266210359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1266210481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633105243 + 633105244.

It is an arithmetic number, because the mean of its divisors is an integer number (633105244).

Almost surely, 2^1266210487 is an apocalyptic number.

1266210487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266210487 is an equidigital number, since it uses as much as digits as its factorization.

1266210487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 1266210487 is about 35583.8514919338. The cubic root of 1266210487 is about 1081.8539507076.

The spelling of 1266210487 in words is "one billion, two hundred sixty-six million, two hundred ten thousand, four hundred eighty-seven".