705913 has 6 divisors (see below), whose sum is σ = 764574. Its totient is φ = 651456.

The previous prime is 705899. The next prime is 705919. The reversal of 705913 is 319507.

It can be written as a sum of positive squares in 3 ways, for example, as 44944 + 660969 = 212^2 + 813^2 .

It is a de Polignac number, because none of the positive numbers 2^k-705913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (705919) 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, 1920 + ... + 2257.

It is an arithmetic number, because the mean of its divisors is an integer number (127429).

2⁷⁰⁵⁹¹³ is an apocalyptic number.

It is an amenable number.

705913 is a deficient number, since it is larger than the sum of its proper divisors (58661).

705913 is a wasteful number, since it uses less digits than its factorization.

705913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4203 (or 4190 counting only the distinct ones).

The product of its (nonzero) digits is 945, while the sum is 25.

The square root of 705913 is about 840.1862888669. The cubic root of 705913 is about 89.0397079053.

The spelling of 705913 in words is "seven hundred five thousand, nine hundred thirteen".