1271676005 has 4 divisors (see below), whose sum is σ = 1526011212. Its totient is φ = 1017340800.

The previous prime is 1271675981. The next prime is 1271676031. The reversal of 1271676005 is 5006761721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 880546276 + 391129729 = 29674^2 + 19777^2 .

It is not a de Polignac number, because 1271676005 - 2⁶ = 1271675941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127167596 + ... + 127167605.

It is an arithmetic number, because the mean of its divisors is an integer number (381502803).

Almost surely, 2^1271676005 is an apocalyptic number.

It is an amenable number.

1271676005 is a deficient number, since it is larger than the sum of its proper divisors (254335207).

1271676005 is an equidigital number, since it uses as much as digits as its factorization.

1271676005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254335206.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 1271676005 is about 35660.5665266271. The cubic root of 1271676005 is about 1083.4083012946.

The spelling of 1271676005 in words is "one billion, two hundred seventy-one million, six hundred seventy-six thousand, five".