613223028 has 96 divisors (see below), whose sum is σ = 1790423040. Its totient is φ = 179820000.

The previous prime is 613222993. The next prime is 613223029. The reversal of 613223028 is 820322316.

613223028 is a `hidden beast` number, since 613 + 2 + 23 + 0 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 613222992 and 613223010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613223029) 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, 28503 + ... + 45153.

It is an arithmetic number, because the mean of its divisors is an integer number (18650240).

Almost surely, 2^613223028 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 613223028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (895211520).

613223028 is an abundant number, since it is smaller than the sum of its proper divisors (1177200012).

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

613223028 is a wasteful number, since it uses less digits than its factorization.

613223028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16706 (or 16698 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 613223028 is about 24763.3404047192. The cubic root of 613223028 is about 849.5836613890.

The spelling of 613223028 in words is "six hundred thirteen million, two hundred twenty-three thousand, twenty-eight".