1271000680 has 16 divisors (see below), whose sum is σ = 2859751620. Its totient is φ = 508400256.

The previous prime is 1271000671. The next prime is 1271000693. The reversal of 1271000680 is 860001721.

It can be written as a sum of positive squares in 2 ways, for example, as 1205617284 + 65383396 = 34722^2 + 8086^2 .

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, 15887469 + ... + 15887548.

Almost surely, 2^1271000680 is an apocalyptic number.

1271000680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1271000680 is an abundant number, since it is smaller than the sum of its proper divisors (1588750940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1271000680 is a wasteful number, since it uses less digits than its factorization.

1271000680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31775028 (or 31775024 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 1271000680 is about 35651.0964768266. The cubic root of 1271000680 is about 1083.2164855959.

The spelling of 1271000680 in words is "one billion, two hundred seventy-one million, six hundred eighty", and thus it is an aban number.