654613 has 2 divisors, whose sum is σ = 654614. Its totient is φ = 654612.

The previous prime is 654611. The next prime is 654623. The reversal of 654613 is 316456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 651249 + 3364 = 807^2 + 58^2 .

It is a cyclic number.

It is not a de Polignac number, because 654613 - 2¹ = 654611 is a prime.

Together with 654611, it forms a pair of twin primes.

654613 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327306 + 327307.

It is an arithmetic number, because the mean of its divisors is an integer number (327307).

2⁶⁵⁴⁶¹³ is an apocalyptic number.

It is an amenable number.

654613 is a deficient number, since it is larger than the sum of its proper divisors (1).

654613 is an equidigital number, since it uses as much as digits as its factorization.

654613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 25.

The square root of 654613 is about 809.0815780872. The cubic root of 654613 is about 86.8283487433.

The spelling of 654613 in words is "six hundred fifty-four thousand, six hundred thirteen".