688928486 has 16 divisors (see below), whose sum is σ = 1106222400. Its totient is φ = 320802408.

The previous prime is 688928479. The next prime is 688928497. The reversal of 688928486 is 684829886.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 151400 + ... + 155883.

It is an arithmetic number, because the mean of its divisors is an integer number (69138900).

Almost surely, 2^688928486 is an apocalyptic number.

688928486 is a deficient number, since it is larger than the sum of its proper divisors (417293914).

688928486 is a wasteful number, since it uses less digits than its factorization.

688928486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307363.

The product of its digits is 10616832, while the sum is 59.

The square root of 688928486 is about 26247.4472282544. The cubic root of 688928486 is about 883.1979401204.

The spelling of 688928486 in words is "six hundred eighty-eight million, nine hundred twenty-eight thousand, four hundred eighty-six".