688458466 has 16 divisors (see below), whose sum is σ = 1058422464. Its totient is φ = 335677104.

The previous prime is 688458457. The next prime is 688458467. The reversal of 688458466 is 664854886.

It is not an unprimeable number, because it can be changed into a prime (688458467) 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 7 ways as a sum of consecutive naturals, for example, 49456 + ... + 61828.

It is an arithmetic number, because the mean of its divisors is an integer number (66151404).

Almost surely, 2^688458466 is an apocalyptic number.

688458466 is a deficient number, since it is larger than the sum of its proper divisors (369963998).

688458466 is a wasteful number, since it uses less digits than its factorization.

688458466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13065.

The product of its digits is 8847360, while the sum is 55.

The square root of 688458466 is about 26238.4920679524. The cubic root of 688458466 is about 882.9970411180.

The spelling of 688458466 in words is "six hundred eighty-eight million, four hundred fifty-eight thousand, four hundred sixty-six".