688253368 has 32 divisors (see below), whose sum is σ = 1409506560. Its totient is φ = 312461280.

The previous prime is 688253353. The next prime is 688253369. The reversal of 688253368 is 863352886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688253369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75505 + ... + 84127.

It is an arithmetic number, because the mean of its divisors is an integer number (44047080).

Almost surely, 2^688253368 is an apocalyptic number.

It is an amenable number.

688253368 is an abundant number, since it is smaller than the sum of its proper divisors (721253192).

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

688253368 is a wasteful number, since it uses less digits than its factorization.

688253368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9547 (or 9543 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 49.

The square root of 688253368 is about 26234.5834348480. The cubic root of 688253368 is about 882.9093481426.

The spelling of 688253368 in words is "six hundred eighty-eight million, two hundred fifty-three thousand, three hundred sixty-eight".