688055734 has 4 divisors (see below), whose sum is σ = 1032083604. Its totient is φ = 344027866.

The previous prime is 688055729. The next prime is 688055749. The reversal of 688055734 is 437550886.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172013932 + ... + 172013935.

It is an arithmetic number, because the mean of its divisors is an integer number (258020901).

Almost surely, 2^688055734 is an apocalyptic number.

688055734 is a deficient number, since it is larger than the sum of its proper divisors (344027870).

688055734 is a wasteful number, since it uses less digits than its factorization.

688055734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344027869.

The product of its (nonzero) digits is 806400, while the sum is 46.

The square root of 688055734 is about 26230.8164951074. The cubic root of 688055734 is about 882.8248300378.

The spelling of 688055734 in words is "six hundred eighty-eight million, fifty-five thousand, seven hundred thirty-four".