689676428648 has 16 divisors (see below), whose sum is σ = 1293219576960. Its totient is φ = 344817874800.

The previous prime is 689676428633. The next prime is 689676428677. The reversal of 689676428648 is 846824676986.

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, 2397848 + ... + 2670023.

It is an arithmetic number, because the mean of its divisors is an integer number (80826223560).

Almost surely, 2^689676428648 is an apocalyptic number.

It is an amenable number.

689676428648 is a deficient number, since it is larger than the sum of its proper divisors (603543148312).

689676428648 is a wasteful number, since it uses less digits than its factorization.

689676428648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5084888 (or 5084884 counting only the distinct ones).

The product of its digits is 1337720832, while the sum is 74.

The spelling of 689676428648 in words is "six hundred eighty-nine billion, six hundred seventy-six million, four hundred twenty-eight thousand, six hundred forty-eight".