688352511698368 has 112 divisors (see below), whose sum is σ = 1568589012777600. Its totient is φ = 296413213639680.

The previous prime is 688352511698321. The next prime is 688352511698407. The reversal of 688352511698368 is 863896115253886.

It is a super-2 number, since 2×688352511698368² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 633305518 + ... + 634391506.

Almost surely, 2^{688352511698368} is an apocalyptic number.

It is an amenable number.

688352511698368 is an abundant number, since it is smaller than the sum of its proper divisors (880236501079232).

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

688352511698368 is a wasteful number, since it uses less digits than its factorization.

688352511698368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133418 (or 1133408 counting only the distinct ones).

The product of its digits is 3583180800, while the sum is 79.

The spelling of 688352511698368 in words is "six hundred eighty-eight trillion, three hundred fifty-two billion, five hundred eleven million, six hundred ninety-eight thousand, three hundred sixty-eight".