705081 has 16 divisors (see below), whose sum is σ = 1028160. Its totient is φ = 427200.

The previous prime is 705079. The next prime is 705097. The reversal of 705081 is 180507.

It is a happy number.

It is not a de Polignac number, because 705081 - 2¹ = 705079 is a prime.

It is a super-2 number, since 2×705081² = 994278433122, which contains 22 as substring.

It is an Ulam number.

It is a Curzon number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (705011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3850 + ... + 4028.

It is an arithmetic number, because the mean of its divisors is an integer number (64260).

2⁷⁰⁵⁰⁸¹ is an apocalyptic number.

It is an amenable number.

705081 is a deficient number, since it is larger than the sum of its proper divisors (323079).

705081 is a wasteful number, since it uses less digits than its factorization.

705081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 705081 is about 839.6910146000. The cubic root of 705081 is about 89.0047129600.

Adding to 705081 its reverse (180507), we get a palindrome (885588).

It can be divided in two parts, 70 and 5081, that added together give a triangular number (5151 = T₁₀₁).

The spelling of 705081 in words is "seven hundred five thousand, eighty-one".