705478 has 4 divisors (see below), whose sum is σ = 1058220. Its totient is φ = 352738.

The previous prime is 705461. The next prime is 705491. The reversal of 705478 is 874507.

It is a happy number.

705478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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

It is a congruent number.

It is an unprimeable number.

705478 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 as a sum of consecutive naturals, namely, 176368 + ... + 176371.

It is an arithmetic number, because the mean of its divisors is an integer number (264555).

2⁷⁰⁵⁴⁷⁸ is an apocalyptic number.

705478 is a deficient number, since it is larger than the sum of its proper divisors (352742).

705478 is a wasteful number, since it uses less digits than its factorization.

705478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352741.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 705478 is about 839.9273778131. The cubic root of 705478 is about 89.0214147013.

The spelling of 705478 in words is "seven hundred five thousand, four hundred seventy-eight".