705865 has 8 divisors (see below), whose sum is σ = 858240. Its totient is φ = 557232.

The previous prime is 705863. The next prime is 705871. The reversal of 705865 is 568507.

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

It is a cyclic number.

It is not a de Polignac number, because 705865 - 2¹ = 705863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (705863) 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, 499 + ... + 1288.

It is an arithmetic number, because the mean of its divisors is an integer number (107280).

2⁷⁰⁵⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

705865 is a deficient number, since it is larger than the sum of its proper divisors (152375).

705865 is a wasteful number, since it uses less digits than its factorization.

705865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1871.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 705865 is about 840.1577232877. The cubic root of 705865 is about 89.0376897138.

The spelling of 705865 in words is "seven hundred five thousand, eight hundred sixty-five".