6432615648 has 60 divisors (see below), whose sum is σ = 18918151560. Its totient is φ = 2144204352.

The previous prime is 6432615647. The next prime is 6432615667. The reversal of 6432615648 is 8465162346.

6432615648 is a `hidden beast` number, since 64 + 3 + 26 + 1 + 564 + 8 = 666.

It is a super-3 number, since 3×6432615648³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6432615641) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1238268 + ... + 1243451.

It is an arithmetic number, because the mean of its divisors is an integer number (315302526).

Almost surely, 2^6432615648 is an apocalyptic number.

It is an amenable number.

6432615648 is an abundant number, since it is smaller than the sum of its proper divisors (12485535912).

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

6432615648 is a wasteful number, since it uses less digits than its factorization.

6432615648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481741 (or 2481724 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 6432615648 is about 80203.5887476365. The cubic root of 6432615648 is about 1859.7841164634.

The spelling of 6432615648 in words is "six billion, four hundred thirty-two million, six hundred fifteen thousand, six hundred forty-eight".