705720 has 32 divisors (see below), whose sum is σ = 2117520. Its totient is φ = 188160.

The previous prime is 705713. The next prime is 705737. The reversal of 705720 is 27507.

705720 is nontrivially palindromic in base 11.

It is a zygodrome in base 11.

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, 2821 + ... + 3060.

2⁷⁰⁵⁷²⁰ is an apocalyptic number.

It is an amenable number.

705720 is an abundant number, since it is smaller than the sum of its proper divisors (1411800).

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

705720 is a wasteful number, since it uses less digits than its factorization.

705720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5895 (or 5891 counting only the distinct ones).

The product of its (nonzero) digits is 490, while the sum is 21.

The square root of 705720 is about 840.0714255348. The cubic root of 705720 is about 89.0315925379.

The spelling of 705720 in words is "seven hundred five thousand, seven hundred twenty".