7648668747 has 48 divisors (see below), whose sum is σ = 12383280000. Its totient is φ = 4520869632.

The previous prime is 7648668739. The next prime is 7648668767. The reversal of 7648668747 is 7478668467.

7648668747 is a `hidden beast` number, since 76 + 486 + 6 + 87 + 4 + 7 = 666.

It is not a de Polignac number, because 7648668747 - 2³ = 7648668739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7648668767) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 513004 + ... + 527702.

It is an arithmetic number, because the mean of its divisors is an integer number (257985000).

Almost surely, 2^7648668747 is an apocalyptic number.

7648668747 is a deficient number, since it is larger than the sum of its proper divisors (4734611253).

7648668747 is a wasteful number, since it uses less digits than its factorization.

7648668747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14920 (or 14917 counting only the distinct ones).

The product of its digits is 75866112, while the sum is 63.

The square root of 7648668747 is about 87456.6678247005. The cubic root of 7648668747 is about 1970.2830334492.

The spelling of 7648668747 in words is "seven billion, six hundred forty-eight million, six hundred sixty-eight thousand, seven hundred forty-seven".