705490 has 8 divisors (see below), whose sum is σ = 1269900. Its totient is φ = 282192.

The previous prime is 705461. The next prime is 705491. The reversal of 705490 is 94507.

705490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 660969 + 44521 = 813^2 + 211^2 .

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

It is a super-2 number, since 2×705490² = 995432280200, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (705491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35265 + ... + 35284.

2⁷⁰⁵⁴⁹⁰ is an apocalyptic number.

705490 is a deficient number, since it is larger than the sum of its proper divisors (564410).

705490 is a wasteful number, since it uses less digits than its factorization.

705490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70556.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 705490 is about 839.9345212575. The cubic root of 705490 is about 89.0219194422.

Adding to 705490 its reverse (94507), we get a palindrome (799997).

The spelling of 705490 in words is "seven hundred five thousand, four hundred ninety".