613299905 has 12 divisors (see below), whose sum is σ = 781800060. Its totient is φ = 461777664.

The previous prime is 613299893. The next prime is 613299931. The reversal of 613299905 is 509992316.

It can be written as a sum of positive squares in 6 ways, for example, as 8976016 + 604323889 = 2996^2 + 24583^2 .

It is a de Polignac number, because none of the positive numbers 2^k-613299905 is a prime.

It is a super-2 number, since 2×613299905² = 752273546946018050, which contains 22 as substring.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 210770 + ... + 213659.

It is an arithmetic number, because the mean of its divisors is an integer number (65150005).

Almost surely, 2^613299905 is an apocalyptic number.

It is an amenable number.

613299905 is a deficient number, since it is larger than the sum of its proper divisors (168500155).

613299905 is a wasteful number, since it uses less digits than its factorization.

613299905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424468 (or 424451 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 44.

The square root of 613299905 is about 24764.8925901164. The cubic root of 613299905 is about 849.6191627270.

The spelling of 613299905 in words is "six hundred thirteen million, two hundred ninety-nine thousand, nine hundred five".