730686 has 16 divisors (see below), whose sum is σ = 1594368. Its totient is φ = 221400.

The previous prime is 730679. The next prime is 730727. The reversal of 730686 is 686037.

It is a congruent number.

It is an unprimeable number.

730686 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 5470 + ... + 5601.

It is an arithmetic number, because the mean of its divisors is an integer number (99648).

2⁷³⁰⁶⁸⁶ is an apocalyptic number.

730686 is an abundant number, since it is smaller than the sum of its proper divisors (863682).

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

730686 is a wasteful number, since it uses less digits than its factorization.

730686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11087.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 730686 is about 854.8017313974. The cubic root of 730686 is about 90.0693292962.

The spelling of 730686 in words is "seven hundred thirty thousand, six hundred eighty-six".