705918 has 16 divisors (see below), whose sum is σ = 1460880. Its totient is φ = 227136.

The previous prime is 705899. The next prime is 705919. The reversal of 705918 is 819507.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 705918.

It is not an unprimeable number, because it can be changed into a prime (705919) by changing a digit.

705918 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1855 + ... + 2202.

It is an arithmetic number, because the mean of its divisors is an integer number (91305).

2⁷⁰⁵⁹¹⁸ is an apocalyptic number.

705918 is an abundant number, since it is smaller than the sum of its proper divisors (754962).

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

705918 is a wasteful number, since it uses less digits than its factorization.

705918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4091.

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 705918 is about 840.1892643923. The cubic root of 705918 is about 89.0399181283.

The spelling of 705918 in words is "seven hundred five thousand, nine hundred eighteen".