613887073 has 2 divisors, whose sum is σ = 613887074. Its totient is φ = 613887072.

The previous prime is 613887067. The next prime is 613887193. The reversal of 613887073 is 370788316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 582884449 + 31002624 = 24143^2 + 5568^2 .

It is a cyclic number.

It is not a de Polignac number, because 613887073 - 2⁵ = 613887041 is a prime.

It is not a weakly prime, because it can be changed into another prime (613887773) 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, 306943536 + 306943537.

It is an arithmetic number, because the mean of its divisors is an integer number (306943537).

Almost surely, 2^613887073 is an apocalyptic number.

It is an amenable number.

613887073 is a deficient number, since it is larger than the sum of its proper divisors (1).

613887073 is an equidigital number, since it uses as much as digits as its factorization.

613887073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 613887073 is about 24776.7446005322. The cubic root of 613887073 is about 849.8902155788.

The spelling of 613887073 in words is "six hundred thirteen million, eight hundred eighty-seven thousand, seventy-three".