613940616 has 144 divisors (see below), whose sum is σ = 1812423600. Its totient is φ = 187220160.

The previous prime is 613940611. The next prime is 613940623. The reversal of 613940616 is 616049316.

613940616 is a `hidden beast` number, since 6 + 1 + 39 + 4 + 0 + 616 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (613940611) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1314415 + ... + 1314881.

It is an arithmetic number, because the mean of its divisors is an integer number (12586275).

Almost surely, 2^613940616 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 613940616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (906211800).

613940616 is an abundant number, since it is smaller than the sum of its proper divisors (1198482984).

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

613940616 is a wasteful number, since it uses less digits than its factorization.

613940616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560 (or 522 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 613940616 is about 24777.8250861531. The cubic root of 613940616 is about 849.9149238957.

The spelling of 613940616 in words is "six hundred thirteen million, nine hundred forty thousand, six hundred sixteen".