705561 has 8 divisors (see below), whose sum is σ = 945504. Its totient is φ = 468000.

The previous prime is 705559. The next prime is 705613. The reversal of 705561 is 165507.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 705561 - 2¹ = 705559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (705521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285 + ... + 1221.

It is an arithmetic number, because the mean of its divisors is an integer number (118188).

2⁷⁰⁵⁵⁶¹ is an apocalyptic number.

It is an amenable number.

705561 is a deficient number, since it is larger than the sum of its proper divisors (239943).

705561 is a wasteful number, since it uses less digits than its factorization.

705561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 705561 is about 839.9767853935. The cubic root of 705561 is about 89.0249057091.

The spelling of 705561 in words is "seven hundred five thousand, five hundred sixty-one".