688022338 has 8 divisors (see below), whose sum is σ = 1086351120. Its totient is φ = 325905300.

The previous prime is 688022333. The next prime is 688022347. The reversal of 688022338 is 833220886.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 688022338.

It is not an unprimeable number, because it can be changed into a prime (688022333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9052888 + ... + 9052963.

It is an arithmetic number, because the mean of its divisors is an integer number (135793890).

Almost surely, 2^688022338 is an apocalyptic number.

688022338 is a deficient number, since it is larger than the sum of its proper divisors (398328782).

688022338 is a wasteful number, since it uses less digits than its factorization.

688022338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18105872.

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 688022338 is about 26230.1799078847. The cubic root of 688022338 is about 882.8105466527.

The spelling of 688022338 in words is "six hundred eighty-eight million, twenty-two thousand, three hundred thirty-eight".