613501 has 4 divisors (see below), whose sum is σ = 701152. Its totient is φ = 525852.

The previous prime is 613499. The next prime is 613507. The reversal of 613501 is 105316.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 613501 - 2¹ = 613499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43815 + ... + 43828.

It is an arithmetic number, because the mean of its divisors is an integer number (175288).

2⁶¹³⁵⁰¹ is an apocalyptic number.

It is an amenable number.

613501 is a deficient number, since it is larger than the sum of its proper divisors (87651).

613501 is an equidigital number, since it uses as much as digits as its factorization.

613501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87650.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 613501 is about 783.2630464920. The cubic root of 613501 is about 84.9712013165.

Adding to 613501 its reverse (105316), we get a palindrome (718817).

The spelling of 613501 in words is "six hundred thirteen thousand, five hundred one".