688070 has 16 divisors (see below), whose sum is σ = 1254960. Its totient is φ = 271584.

The previous prime is 688067. The next prime is 688073. The reversal of 688070 is 70886.

It is an interprime number because it is at equal distance from previous prime (688067) and next prime (688073).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 688070.

It is not an unprimeable number, because it can be changed into a prime (688073) by changing a digit.

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, 416 + ... + 1244.

It is an arithmetic number, because the mean of its divisors is an integer number (78435).

2⁶⁸⁸⁰⁷⁰ is an apocalyptic number.

It is a pronic number, being equal to 829×830.

688070 is a deficient number, since it is larger than the sum of its proper divisors (566890).

688070 is a wasteful number, since it uses less digits than its factorization.

688070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 688070 is about 829.4998493068. The cubic root of 688070 is about 88.2830931429.

The spelling of 688070 in words is "six hundred eighty-eight thousand, seventy".