613213501 has 2 divisors, whose sum is σ = 613213502. Its totient is φ = 613213500.

The previous prime is 613213499. The next prime is 613213519. The reversal of 613213501 is 105312316.

It is a happy number.

613213501 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 can be written as a sum of positive squares in only one way, i.e., 611325625 + 1887876 = 24725^2 + 1374^2 .

It is a cyclic number.

It is not a de Polignac number, because 613213501 - 2¹ = 613213499 is a prime.

Together with 613213499, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (613213561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306606750 + 306606751.

It is an arithmetic number, because the mean of its divisors is an integer number (306606751).

Almost surely, 2^613213501 is an apocalyptic number.

It is an amenable number.

613213501 is a deficient number, since it is larger than the sum of its proper divisors (1).

613213501 is an equidigital number, since it uses as much as digits as its factorization.

613213501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 613213501 is about 24763.1480430094. The cubic root of 613213501 is about 849.5792616709.

Adding to 613213501 its reverse (105312316), we get a palindrome (718525817).

The spelling of 613213501 in words is "six hundred thirteen million, two hundred thirteen thousand, five hundred one".