613857216 has 224 divisors, whose sum is σ = 1999683072. Its totient is φ = 162201600.

The previous prime is 613857197. The next prime is 613857217. The reversal of 613857216 is 612758316.

It is a tau number, because it is divible by the number of its divisors (224).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613857217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1530616 + ... + 1531016.

Almost surely, 2^613857216 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 613857216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (999841536).

613857216 is an abundant number, since it is smaller than the sum of its proper divisors (1385825856).

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

613857216 is a wasteful number, since it uses less digits than its factorization.

613857216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507 (or 497 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 613857216 is about 24776.1420725665. The cubic root of 613857216 is about 849.8764369407.

The spelling of 613857216 in words is "six hundred thirteen million, eight hundred fifty-seven thousand, two hundred sixteen".