706688 has 16 divisors (see below), whose sum is σ = 1408110. Its totient is φ = 353280.

The previous prime is 706679. The next prime is 706703. The reversal of 706688 is 886607.

It can be written as a sum of positive squares in only one way, i.e., 652864 + 53824 = 808^2 + 232^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a plaindrome in base 14.

It is an unprimeable number.

706688 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2633 + ... + 2888.

2⁷⁰⁶⁶⁸⁸ is an apocalyptic number.

It is an amenable number.

706688 is a deficient number, since it is larger than the sum of its proper divisors (701422).

706688 is an equidigital number, since it uses as much as digits as its factorization.

706688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5535 (or 5523 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 706688 is about 840.6473695908. The cubic root of 706688 is about 89.0722806331.

The spelling of 706688 in words is "seven hundred six thousand, six hundred eighty-eight".