613808091 has 64 divisors (see below), whose sum is σ = 1064448000. Its totient is φ = 346187520.

The previous prime is 613808077. The next prime is 613808099. The reversal of 613808091 is 190808316.

It is not a de Polignac number, because 613808091 - 2¹¹ = 613806043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (613808099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 205255 + ... + 208223.

It is an arithmetic number, because the mean of its divisors is an integer number (16632000).

Almost surely, 2^613808091 is an apocalyptic number.

613808091 is a deficient number, since it is larger than the sum of its proper divisors (450639909).

613808091 is a wasteful number, since it uses less digits than its factorization.

613808091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3041 (or 3035 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 613808091 is about 24775.1506756266. The cubic root of 613808091 is about 849.8537653852.

The spelling of 613808091 in words is "six hundred thirteen million, eight hundred eight thousand, ninety-one".