1266761479 has 2 divisors, whose sum is σ = 1266761480. Its totient is φ = 1266761478.

The previous prime is 1266761473. The next prime is 1266761539. The reversal of 1266761479 is 9741676621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1266761479 - 2⁷ = 1266761351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1266761473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633380739 + 633380740.

It is an arithmetic number, because the mean of its divisors is an integer number (633380740).

Almost surely, 2^1266761479 is an apocalyptic number.

1266761479 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266761479 is an equidigital number, since it uses as much as digits as its factorization.

1266761479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 49.

The square root of 1266761479 is about 35591.5928134721. The cubic root of 1266761479 is about 1082.0108510112.

The spelling of 1266761479 in words is "one billion, two hundred sixty-six million, seven hundred sixty-one thousand, four hundred seventy-nine".