676643238648 has 48 divisors (see below), whose sum is σ = 1973542782120. Its totient is φ = 208197919296.

The previous prime is 676643238647. The next prime is 676643238683. The reversal of 676643238648 is 846832346676.

676643238648 is a `hidden beast` number, since 67 + 66 + 432 + 3 + 86 + 4 + 8 = 666.

676643238648 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (676643238641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 361453786 + ... + 361455657.

Almost surely, 2^676643238648 is an apocalyptic number.

It is an amenable number.

676643238648 is an abundant number, since it is smaller than the sum of its proper divisors (1296899543472).

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

676643238648 is a wasteful number, since it uses less digits than its factorization.

676643238648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722909468 (or 722909461 counting only the distinct ones).

The product of its digits is 167215104, while the sum is 63.

The spelling of 676643238648 in words is "six hundred seventy-six billion, six hundred forty-three million, two hundred thirty-eight thousand, six hundred forty-eight".