613507 has 2 divisors, whose sum is σ = 613508. Its totient is φ = 613506.

The previous prime is 613499. The next prime is 613523. The reversal of 613507 is 705316.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 613507 - 2³ = 613499 is a prime.

It is not a weakly prime, because it can be changed into another prime (613577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306753 + 306754.

It is an arithmetic number, because the mean of its divisors is an integer number (306754).

2⁶¹³⁵⁰⁷ is an apocalyptic number.

613507 is a deficient number, since it is larger than the sum of its proper divisors (1).

613507 is an equidigital number, since it uses as much as digits as its factorization.

613507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 613507 is about 783.2668766136. The cubic root of 613507 is about 84.9714783199.

Subtracting 613507 from its reverse (705316), we obtain a square (91809 = 303²).

The spelling of 613507 in words is "six hundred thirteen thousand, five hundred seven".