609613 has 2 divisors, whose sum is σ = 609614. Its totient is φ = 609612.

The previous prime is 609607. The next prime is 609617. The reversal of 609613 is 316906.

609613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 550564 + 59049 = 742^2 + 243^2 .

It is a cyclic number.

It is not a de Polignac number, because 609613 - 2⁹ = 609101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (609617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304806 + 304807.

It is an arithmetic number, because the mean of its divisors is an integer number (304807).

2⁶⁰⁹⁶¹³ is an apocalyptic number.

It is an amenable number.

609613 is a deficient number, since it is larger than the sum of its proper divisors (1).

609613 is an equidigital number, since it uses as much as digits as its factorization.

609613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 609613 is about 780.7771769205. Note that the first 3 decimals coincide. The cubic root of 609613 is about 84.7913220175.

The spelling of 609613 in words is "six hundred nine thousand, six hundred thirteen".