7742287648 has 24 divisors (see below), whose sum is σ = 15281048412. Its totient is φ = 3861386496.

The previous prime is 7742287621. The next prime is 7742287739. The reversal of 7742287648 is 8467822477.

It can be written as a sum of positive squares in 2 ways, for example, as 7629673104 + 112614544 = 87348^2 + 10612^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292015 + ... + 317422.

Almost surely, 2^7742287648 is an apocalyptic number.

It is an amenable number.

7742287648 is a deficient number, since it is larger than the sum of its proper divisors (7538760764).

7742287648 is a wasteful number, since it uses less digits than its factorization.

7742287648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609844 (or 609836 counting only the distinct ones).

The product of its digits is 8429568, while the sum is 55.

The square root of 7742287648 is about 87990.2701893795. The cubic root of 7742287648 is about 1978.2891428116.

The spelling of 7742287648 in words is "seven billion, seven hundred forty-two million, two hundred eighty-seven thousand, six hundred forty-eight".