613663904 has 96 divisors (see below), whose sum is σ = 1420909056. Its totient is φ = 255467520.

The previous prime is 613663901. The next prime is 613663927. The reversal of 613663904 is 409366316.

It is not an unprimeable number, because it can be changed into a prime (613663901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1325177 + ... + 1325639.

It is an arithmetic number, because the mean of its divisors is an integer number (14801136).

Almost surely, 2^613663904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 613663904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (710454528).

613663904 is an abundant number, since it is smaller than the sum of its proper divisors (807245152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

613663904 is a wasteful number, since it uses less digits than its factorization.

613663904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 38.

The square root of 613663904 is about 24772.2405930509. The cubic root of 613663904 is about 849.7872150183.

The spelling of 613663904 in words is "six hundred thirteen million, six hundred sixty-three thousand, nine hundred four".