688685485 has 8 divisors (see below), whose sum is σ = 826848000. Its totient is φ = 550664784.

The previous prime is 688685479. The next prime is 688685497. The reversal of 688685485 is 584586886.

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

It is a cyclic number.

It is not a de Polignac number, because 688685485 - 2⁹ = 688684973 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24457 + ... + 44446.

It is an arithmetic number, because the mean of its divisors is an integer number (103356000).

Almost surely, 2^688685485 is an apocalyptic number.

It is an amenable number.

688685485 is a deficient number, since it is larger than the sum of its proper divisors (138162515).

688685485 is a wasteful number, since it uses less digits than its factorization.

688685485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70907.

The product of its digits is 14745600, while the sum is 58.

The square root of 688685485 is about 26242.8177793468. The cubic root of 688685485 is about 883.0940864668.

The spelling of 688685485 in words is "six hundred eighty-eight million, six hundred eighty-five thousand, four hundred eighty-five".