705438 has 12 divisors (see below), whose sum is σ = 1528488. Its totient is φ = 235140.

The previous prime is 705437. The next prime is 705461. The reversal of 705438 is 834507.

It is an alternating number because its digits alternate between odd and even.

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 705438.

It is not an unprimeable number, because it can be changed into a prime (705437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19578 + ... + 19613.

It is an arithmetic number, because the mean of its divisors is an integer number (127374).

2⁷⁰⁵⁴³⁸ is an apocalyptic number.

705438 is an abundant number, since it is smaller than the sum of its proper divisors (823050).

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

705438 is a wasteful number, since it uses less digits than its factorization.

705438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39199 (or 39196 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 705438 is about 839.9035658931. The cubic root of 705438 is about 89.0197321901.

The spelling of 705438 in words is "seven hundred five thousand, four hundred thirty-eight".