613523 has 2 divisors, whose sum is σ = 613524. Its totient is φ = 613522.

The previous prime is 613507. The next prime is 613549. The reversal of 613523 is 325316.

613523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 613523 - 2⁴ = 613507 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 613495 and 613504.

It is not a weakly prime, because it can be changed into another prime (613573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306761 + 306762.

It is an arithmetic number, because the mean of its divisors is an integer number (306762).

2⁶¹³⁵²³ is an apocalyptic number.

613523 is a deficient number, since it is larger than the sum of its proper divisors (1).

613523 is an equidigital number, since it uses as much as digits as its factorization.

613523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 540, while the sum is 20.

The square root of 613523 is about 783.2770901795. The cubic root of 613523 is about 84.9722169868.

Adding to 613523 its reverse (325316), we get a palindrome (938839).

The spelling of 613523 in words is "six hundred thirteen thousand, five hundred twenty-three".