1271609696 has 48 divisors (see below), whose sum is σ = 2887426080. Its totient is φ = 539965440.

The previous prime is 1271609681. The next prime is 1271609737. The reversal of 1271609696 is 6969061721.

It is a super-2 number, since 2×1271609696² = 3233982437922424832, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1271609696.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1625 + ... + 50456.

It is an arithmetic number, because the mean of its divisors is an integer number (60154710).

Almost surely, 2^1271609696 is an apocalyptic number.

1271609696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1271609696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1443713040).

1271609696 is an abundant number, since it is smaller than the sum of its proper divisors (1615816384).

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

1271609696 is a wasteful number, since it uses less digits than its factorization.

1271609696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52207 (or 52199 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 1271609696 is about 35659.6367900740. The cubic root of 1271609696 is about 1083.3894702481.

The spelling of 1271609696 in words is "one billion, two hundred seventy-one million, six hundred nine thousand, six hundred ninety-six".