6507656488 has 8 divisors (see below), whose sum is σ = 12201855930. Its totient is φ = 3253828240.

The previous prime is 6507656479. The next prime is 6507656549. The reversal of 6507656488 is 8846567056.

It can be written as a sum of positive squares in only one way, i.e., 4816637604 + 1691018884 = 69402^2 + 41122^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406728523 + ... + 406728538.

Almost surely, 2^6507656488 is an apocalyptic number.

It is an amenable number.

6507656488 is a deficient number, since it is larger than the sum of its proper divisors (5694199442).

6507656488 is a wasteful number, since it uses less digits than its factorization.

6507656488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813457067 (or 813457063 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 55.

The square root of 6507656488 is about 80670.0470311007. The cubic root of 6507656488 is about 1866.9880582386.

The spelling of 6507656488 in words is "six billion, five hundred seven million, six hundred fifty-six thousand, four hundred eighty-eight".