7747706648 has 16 divisors (see below), whose sum is σ = 15847581960. Its totient is φ = 3521684800.

The previous prime is 7747706623. The next prime is 7747706657. The reversal of 7747706648 is 8466077477.

It is a junction number, because it is equal to n+sod(n) for n = 7747706593 and 7747706602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44020973 + ... + 44021148.

Almost surely, 2^7747706648 is an apocalyptic number.

It is an amenable number.

7747706648 is an abundant number, since it is smaller than the sum of its proper divisors (8099875312).

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

7747706648 is a wasteful number, since it uses less digits than its factorization.

7747706648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88042138 (or 88042134 counting only the distinct ones).

The product of its (nonzero) digits is 11063808, while the sum is 56.

The square root of 7747706648 is about 88021.0579804628. The cubic root of 7747706648 is about 1978.7505847517.

The spelling of 7747706648 in words is "seven billion, seven hundred forty-seven million, seven hundred six thousand, six hundred forty-eight".