705401 has 4 divisors (see below), whose sum is σ = 710052. Its totient is φ = 700752.

The previous prime is 705389. The next prime is 705403. The reversal of 705401 is 104507.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104507 = 13 ⋅8039.

It can be written as a sum of positive squares in 2 ways, for example, as 525625 + 179776 = 725^2 + 424^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-705401 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 705401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (705403) 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 3 ways as a sum of consecutive naturals, for example, 2090 + ... + 2403.

It is an arithmetic number, because the mean of its divisors is an integer number (177513).

2⁷⁰⁵⁴⁰¹ is an apocalyptic number.

It is an amenable number.

705401 is a deficient number, since it is larger than the sum of its proper divisors (4651).

705401 is a wasteful number, since it uses less digits than its factorization.

705401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4650.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 705401 is about 839.8815392661. The cubic root of 705401 is about 89.0181758106.

Adding to 705401 its reverse (104507), we get a palindrome (809908).

The spelling of 705401 in words is "seven hundred five thousand, four hundred one".