613463440 has 80 divisors (see below), whose sum is σ = 1458835200. Its totient is φ = 239855616.

The previous prime is 613463407. The next prime is 613463447. The reversal of 613463440 is 44364316.

It is a happy number.

613463440 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (613463447) 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, 713731 + ... + 714589.

It is an arithmetic number, because the mean of its divisors is an integer number (18235440).

Almost surely, 2^613463440 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 613463440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (729417600).

613463440 is an abundant number, since it is smaller than the sum of its proper divisors (845371760).

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

613463440 is a wasteful number, since it uses less digits than its factorization.

613463440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064 (or 1058 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 613463440 is about 24768.1941206863. The cubic root of 613463440 is about 849.6946723436.

The spelling of 613463440 in words is "six hundred thirteen million, four hundred sixty-three thousand, four hundred forty".