689070 has 32 divisors (see below), whose sum is σ = 1677312. Its totient is φ = 181152.

The previous prime is 689063. The next prime is 689071. The reversal of 689070 is 70986.

It is a happy number.

689070 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a zygodrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689071) by changing a digit.

689070 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 in 15 ways as a sum of consecutive naturals, for example, 2979 + ... + 3201.

It is an arithmetic number, because the mean of its divisors is an integer number (52416).

2⁶⁸⁹⁰⁷⁰ is an apocalyptic number.

689070 is an abundant number, since it is smaller than the sum of its proper divisors (988242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

689070 is a wasteful number, since it uses less digits than its factorization.

689070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 689070 is about 830.1024033214. The cubic root of 689070 is about 88.3258409056.

The spelling of 689070 in words is "six hundred eighty-nine thousand, seventy".