688928046 has 8 divisors (see below), whose sum is σ = 1377856104. Its totient is φ = 229642680.

The previous prime is 688928041. The next prime is 688928101. The reversal of 688928046 is 640829886.

It is a happy number.

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

688928046 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 688928046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688928041) 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, 57410665 + ... + 57410676.

It is an arithmetic number, because the mean of its divisors is an integer number (172232013).

Almost surely, 2^688928046 is an apocalyptic number.

688928046 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

688928046 is a wasteful number, since it uses less digits than its factorization.

688928046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114821346.

The product of its (nonzero) digits is 1327104, while the sum is 51.

The square root of 688928046 is about 26247.4388464856. The cubic root of 688928046 is about 883.1977520955.

The spelling of 688928046 in words is "six hundred eighty-eight million, nine hundred twenty-eight thousand, forty-six".