713561 has 4 divisors (see below), whose sum is σ = 718500. Its totient is φ = 708624.

The previous prime is 713533. The next prime is 713563. The reversal of 713561 is 165317.

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

It can be written as a sum of positive squares in 2 ways, for example, as 65536 + 648025 = 256^2 + 805^2 .

It is a cyclic number.

It is not a de Polignac number, because 713561 - 2⁶ = 713497 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 713561.

It is not an unprimeable number, because it can be changed into a prime (713563) 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, 2246 + ... + 2543.

It is an arithmetic number, because the mean of its divisors is an integer number (179625).

2⁷¹³⁵⁶¹ is an apocalyptic number.

It is an amenable number.

713561 is a deficient number, since it is larger than the sum of its proper divisors (4939).

713561 is a wasteful number, since it uses less digits than its factorization.

713561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4938.

The product of its digits is 630, while the sum is 23.

The square root of 713561 is about 844.7253991683. The cubic root of 713561 is about 89.3601114619.

Adding to 713561 its reverse (165317), we get a palindrome (878878).

It can be divided in two parts, 713 and 561, that multiplied together give a palindrome (399993).

The spelling of 713561 in words is "seven hundred thirteen thousand, five hundred sixty-one".