1287568996 has 24 divisors (see below), whose sum is σ = 2586698240. Its totient is φ = 549338112.

The previous prime is 1287568981. The next prime is 1287569011. The reversal of 1287568996 is 6998657821.

It is an interprime number because it is at equal distance from previous prime (1287568981) and next prime (1287569011).

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, 96861 + ... + 109348.

Almost surely, 2^1287568996 is an apocalyptic number.

It is an amenable number.

1287568996 is an abundant number, since it is smaller than the sum of its proper divisors (1299129244).

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

1287568996 is a wasteful number, since it uses less digits than its factorization.

1287568996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206443 (or 206441 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 61.

The square root of 1287568996 is about 35882.7116589591. The cubic root of 1287568996 is about 1087.9029895212.

The spelling of 1287568996 in words is "one billion, two hundred eighty-seven million, five hundred sixty-eight thousand, nine hundred ninety-six".