1288246664 has 64 divisors (see below), whose sum is σ = 2645913600. Its totient is φ = 585748800.

The previous prime is 1288246657. The next prime is 1288246667. The reversal of 1288246664 is 4666428821.

It is not an unprimeable number, because it can be changed into a prime (1288246667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 616229 + ... + 618315.

It is an arithmetic number, because the mean of its divisors is an integer number (41342400).

Almost surely, 2^1288246664 is an apocalyptic number.

It is an amenable number.

1288246664 is an abundant number, since it is smaller than the sum of its proper divisors (1357666936).

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

1288246664 is a wasteful number, since it uses less digits than its factorization.

1288246664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2274 (or 2270 counting only the distinct ones).

The product of its digits is 884736, while the sum is 47.

The square root of 1288246664 is about 35892.1532371631. The cubic root of 1288246664 is about 1088.0938162506.

The spelling of 1288246664 in words is "one billion, two hundred eighty-eight million, two hundred forty-six thousand, six hundred sixty-four".