613456740 has 120 divisors (see below), whose sum is σ = 2072541240. Its totient is φ = 150999552.

The previous prime is 613456733. The next prime is 613456763. The reversal of 613456740 is 47654316.

It is a happy number.

613456740 is a `hidden beast` number, since 61 + 34 + 567 + 4 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2916 + 613453824 = 54^2 + 24768^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 613456695 and 613456704.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6496 + ... + 35624.

It is an arithmetic number, because the mean of its divisors is an integer number (17271177).

Almost surely, 2^613456740 is an apocalyptic number.

613456740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 613456740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1036270620).

613456740 is an abundant number, since it is smaller than the sum of its proper divisors (1459084500).

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

613456740 is a wasteful number, since it uses less digits than its factorization.

613456740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29163 (or 29152 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 613456740 is about 24768.0588662091. The cubic root of 613456740 is about 849.6915789916.

The spelling of 613456740 in words is "six hundred thirteen million, four hundred fifty-six thousand, seven hundred forty".