684070 has 16 divisors (see below), whose sum is σ = 1250928. Its totient is φ = 269280.

The previous prime is 684053. The next prime is 684091. The reversal of 684070 is 70486.

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, 160 + ... + 1180.

It is an arithmetic number, because the mean of its divisors is an integer number (78183).

2⁶⁸⁴⁰⁷⁰ is an apocalyptic number.

684070 is a deficient number, since it is larger than the sum of its proper divisors (566858).

684070 is a wasteful number, since it uses less digits than its factorization.

684070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 684070 is about 827.0852434907. The cubic root of 684070 is about 88.1116867033. Note that the first 3 decimals are identical.

The spelling of 684070 in words is "six hundred eighty-four thousand, seventy".