1248556664 has 16 divisors (see below), whose sum is σ = 2341687320. Its totient is φ = 624106720.

The previous prime is 1248556649. The next prime is 1248556667. The reversal of 1248556664 is 4666558421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1248556667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12659 + ... + 51549.

Almost surely, 2^1248556664 is an apocalyptic number.

It is an amenable number.

1248556664 is a deficient number, since it is larger than the sum of its proper divisors (1093130656).

1248556664 is a wasteful number, since it uses less digits than its factorization.

1248556664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42910 (or 42906 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 47.

The square root of 1248556664 is about 35334.9213102279. The cubic root of 1248556664 is about 1076.8025755815.

The spelling of 1248556664 in words is "one billion, two hundred forty-eight million, five hundred fifty-six thousand, six hundred sixty-four".