705555 has 12 divisors (see below), whose sum is σ = 1223040. Its totient is φ = 376272.

The previous prime is 705533. The next prime is 705559. The reversal of 705555 is 555507.

It is not a de Polignac number, because 705555 - 2⁶ = 705491 is a prime.

It is an Ulam number.

705555 is a modest number, since divided by 5555 gives 70 as remainder.

It is not an unprimeable number, because it can be changed into a prime (705559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7795 + ... + 7884.

It is an arithmetic number, because the mean of its divisors is an integer number (101920).

2⁷⁰⁵⁵⁵⁵ is an apocalyptic number.

705555 is a deficient number, since it is larger than the sum of its proper divisors (517485).

705555 is a wasteful number, since it uses less digits than its factorization.

705555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15690 (or 15687 counting only the distinct ones).

The product of its (nonzero) digits is 4375, while the sum is 27.

The square root of 705555 is about 839.9732138586. The cubic root of 705555 is about 89.0246533563.

It can be divided in two parts, 70 and 5555, that added together give a square (5625 = 75²).

The spelling of 705555 in words is "seven hundred five thousand, five hundred fifty-five".