613709923 has 2 divisors, whose sum is σ = 613709924. Its totient is φ = 613709922.

The previous prime is 613709903. The next prime is 613709927. The reversal of 613709923 is 329907316.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 613709923 - 2⁵ = 613709891 is a prime.

It is not a weakly prime, because it can be changed into another prime (613709927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306854961 + 306854962.

It is an arithmetic number, because the mean of its divisors is an integer number (306854962).

Almost surely, 2^613709923 is an apocalyptic number.

613709923 is a deficient number, since it is larger than the sum of its proper divisors (1).

613709923 is an equidigital number, since it uses as much as digits as its factorization.

613709923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 40.

The square root of 613709923 is about 24773.1694177390. The cubic root of 613709923 is about 849.8084564938.

The spelling of 613709923 in words is "six hundred thirteen million, seven hundred nine thousand, nine hundred twenty-three".