688605324 has 48 divisors (see below), whose sum is σ = 1755143040. Its totient is φ = 208391040.

The previous prime is 688605301. The next prime is 688605329. The reversal of 688605324 is 423506886.

It is a super-2 number, since 2×688605324² = 948354584482289952, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (688605329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110352 + ... + 116424.

It is an arithmetic number, because the mean of its divisors is an integer number (36565480).

Almost surely, 2^688605324 is an apocalyptic number.

It is an amenable number.

688605324 is an abundant number, since it is smaller than the sum of its proper divisors (1066537716).

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

688605324 is a wasteful number, since it uses less digits than its factorization.

688605324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6950 (or 6948 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 688605324 is about 26241.2904408301. The cubic root of 688605324 is about 883.0598219375.

The spelling of 688605324 in words is "six hundred eighty-eight million, six hundred five thousand, three hundred twenty-four".