688153340 has 48 divisors (see below), whose sum is σ = 1670155200. Its totient is φ = 233283072.

The previous prime is 688153339. The next prime is 688153423. The reversal of 688153340 is 43351886.

It is a junction number, because it is equal to n+sod(n) for n = 688153294 and 688153303.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15155 + ... + 40074.

It is an arithmetic number, because the mean of its divisors is an integer number (34794900).

Almost surely, 2^688153340 is an apocalyptic number.

It is an amenable number.

688153340 is an abundant number, since it is smaller than the sum of its proper divisors (982001860).

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

688153340 is a wasteful number, since it uses less digits than its factorization.

688153340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55334 (or 55332 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 688153340 is about 26232.6769507041. The cubic root of 688153340 is about 882.8665732290.

The spelling of 688153340 in words is "six hundred eighty-eight million, one hundred fifty-three thousand, three hundred forty".