1272708763 has 2 divisors, whose sum is σ = 1272708764. Its totient is φ = 1272708762.

The previous prime is 1272708733. The next prime is 1272708781. The reversal of 1272708763 is 3678072721.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1272708763 is a prime.

It is not a weakly prime, because it can be changed into another prime (1272708713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636354381 + 636354382.

It is an arithmetic number, because the mean of its divisors is an integer number (636354382).

Almost surely, 2^1272708763 is an apocalyptic number.

1272708763 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272708763 is an equidigital number, since it uses as much as digits as its factorization.

1272708763 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 197568, while the sum is 43.

The square root of 1272708763 is about 35675.0439803513. The cubic root of 1272708763 is about 1083.7015090582.

The spelling of 1272708763 in words is "one billion, two hundred seventy-two million, seven hundred eight thousand, seven hundred sixty-three".