613706688 has 168 divisors, whose sum is σ = 2116449920. Its totient is φ = 166095360.

The previous prime is 613706657. The next prime is 613706689. The reversal of 613706688 is 886607316.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613706689) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72603 + ... + 80613.

Almost surely, 2^613706688 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 613706688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1058224960).

613706688 is an abundant number, since it is smaller than the sum of its proper divisors (1502743232).

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

613706688 is a wasteful number, since it uses less digits than its factorization.

613706688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8055 (or 8042 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 613706688 is about 24773.1041252403. The cubic root of 613706688 is about 849.8069633154.

The spelling of 613706688 in words is "six hundred thirteen million, seven hundred six thousand, six hundred eighty-eight".