659873573968 has 30 divisors (see below), whose sum is σ = 1487240569626. Its totient is φ = 282802959936.

The previous prime is 659873573921. The next prime is 659873573977. The reversal of 659873573968 is 869375378956.

It can be written as a sum of positive squares in only one way, i.e., 597479529024 + 62394044944 = 772968^2 + 249788^2 .

It is a junction number, because it is equal to n+sod(n) for n = 659873573894 and 659873573903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 420836955 + ... + 420838522.

Almost surely, 2^659873573968 is an apocalyptic number.

It is an amenable number.

659873573968 is an abundant number, since it is smaller than the sum of its proper divisors (827366995658).

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

659873573968 is a wasteful number, since it uses less digits than its factorization.

659873573968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841675499 (or 841675486 counting only the distinct ones).

The product of its digits is 2057529600, while the sum is 76.

The spelling of 659873573968 in words is "six hundred fifty-nine billion, eight hundred seventy-three million, five hundred seventy-three thousand, nine hundred sixty-eight".